5721
5721 is a odd composite number that follows 5720 and precedes 5722. It is composed of 4 distinct factors: 1, 3, 1907, 5721. Its prime factorization can be written as 3 × 1907. 5721 is classified as a deficient number based on the sum of its proper divisors. In computer science, 5721 is represented as 1011001011001 in binary and 1659 in hexadecimal.
Factor Analysis
4 FactorsProperties
The prime factorization (3 × 1907) reveals 2 prime building blocks.
Divisible by 2
5721 ends in 1, so it is odd.
Divisible by 3
The digit sum 15 is a multiple of 3.
Divisible by 4
The last two digits 21 are not divisible by 4.
Divisible by 5
5721 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 15 is not a multiple of 9.
Divisible by 10
5721 does not end in 0.
Divisible by 11
The alternating digit sum -1 is not a multiple of 11.
Deficient classification and digit analytics place 5721 within several notable number theory sequences:
Timeline
Deep dive
How 5721 breaks down
5721 carries 4 distinct factors and a digit signature of 15 (6 as the digital root). The deficient classification indicates that its proper divisors sum to 1911, which stays below the number, offering a quick glimpse into its abundance profile.
Numeral conversions provide additional context: the binary form 1011001011001 supports bitwise reasoning, hexadecimal 1659 aligns with computing notation, and the Roman numeral N/A (1-3999) keeps the encyclopedic tradition alive. These attributes make 5721 useful for math olympiad problems, puzzle design, and code challenges alike.
Context
Where 5721 shows up
Engineers lean on the divisibility profile when sizing circuits, mod designers use neighboring values (5716–5726) to tune search ranges, and educators feature 5721 in worksheets about factor trees. Its binary footprint of length 13 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 5721 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 5721
Is 5721 a prime number?
5721 is composite with 4 total factors and the prime factorization 3 × 1907.
What is the prime factorization of 5721?
It breaks down as 3 × 1907, multiplying the primes 3 × 1907.
How is 5721 represented in binary and hexadecimal?
5721 converts to 1011001011001 in binary and 1659 in hexadecimal, which are helpful for computer science applications.
Is 5721 a perfect square, cube, or triangular number?
5721 is not a perfect square, is not a perfect cube, and is not triangular.
What are the digit sum and digital root of 5721?
The digits sum to 15, producing a digital root of 6. These tests power divisibility shortcuts for 3 and 9.