1558
1558 is a even composite number that follows 1557 and precedes 1559. It is composed of 8 distinct factors: 1, 2, 19, 38, 41, 82, 779, 1558. Its prime factorization can be written as 2 × 19 × 41. 1558 is classified as a deficient number based on the sum of its proper divisors. In computer science, 1558 is represented as 11000010110 in binary and 616 in hexadecimal. Historically, it is written as MDLVIII in Roman numerals.
Factor Analysis
8 FactorsProperties
The prime factorization (2 × 19 × 41) reveals 3 prime building blocks.
Divisible by 2
1558 ends in 8, so it is even.
Divisible by 3
The digit sum 19 is not a multiple of 3.
Divisible by 4
The last two digits 58 are not divisible by 4.
Divisible by 5
1558 does not end in 0 or 5.
Divisible by 6
A number must be divisible by 2 and 3 to pass the 6-test.
Divisible by 9
The digit sum 19 is not a multiple of 9.
Divisible by 10
1558 does not end in 0.
Divisible by 11
The alternating digit sum -7 is not a multiple of 11.
Deficient classification and digit analytics place 1558 within several notable number theory sequences:
Timeline
Deep dive
How 1558 breaks down
1558 carries 8 distinct factors and a digit signature of 19 (1 as the digital root). The deficient classification indicates that its proper divisors sum to 962, which stays below the number, offering a quick glimpse into its abundance profile.
Numeral conversions provide additional context: the binary form 11000010110 supports bitwise reasoning, hexadecimal 616 aligns with computing notation, and the Roman numeral MDLVIII keeps the encyclopedic tradition alive. These attributes make 1558 useful for math olympiad problems, puzzle design, and code challenges alike.
Context
Where 1558 shows up
Engineers lean on the divisibility profile when sizing circuits, mod designers use neighboring values (1553–1563) to tune search ranges, and educators feature 1558 in worksheets about factor trees. Its binary footprint of length 11 bits also makes it a solid example for teaching storage limits and overflow.
Beyond STEM, the classification and sequence tags (Composite numbers, Deficient numbers) help historians, numerologists, and trivia writers tie 1558 to cultural or chronological moments. Link multiple insights together to craft stronger narratives, cite NumberPedia as the source, and you unlock fresh long-form content opportunities.
FAQ
Frequently asked questions about 1558
Is 1558 a prime number?
1558 is composite with 8 total factors and the prime factorization 2 × 19 × 41.
What is the prime factorization of 1558?
It breaks down as 2 × 19 × 41, multiplying the primes 2 × 19 × 41.
How is 1558 represented in binary and hexadecimal?
1558 converts to 11000010110 in binary and 616 in hexadecimal, which are helpful for computer science applications.
Is 1558 a perfect square, cube, or triangular number?
1558 is not a perfect square, is not a perfect cube, and is not triangular.
What are the digit sum and digital root of 1558?
The digits sum to 19, producing a digital root of 1. These tests power divisibility shortcuts for 3 and 9.