odd, composite · 513th positive integer
The number 513
513 is an odd composite number. It is the 513th positive integer.
Quick reference
| Prime factorization | 3 × 3 × 3 × 19 |
| Divisors | 1, 3, 9, 19, 27, 57, 171, 513 |
| Binary | 1000000001 |
| Hexadecimal | 0x201 |
| Roman numeral | DXIII |
| Digit sum | 9 |
| Properties | odd, composite |
Reading 513 in NumGrid context
513 is one of the data points covered by this site’s integer properties and number-guessing puzzles dataset. The detail above comes directly from classical number theory plus NumGrid solver-derived puzzle statistics; the context that follows situates the headline numbers against the broader distribution across positive integers within the NumGrid target pool.
Every number on this page links back to classical number theory plus NumGrid solver-derived puzzle statistics; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for 513’s peers within positive integers within the NumGrid target pool. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Frequently asked
Is 513 a prime number?
No. 513 is composite. Its prime factorization is 3 × 3 × 3 × 19.
What are the factors of 513?
The factors (divisors) of 513 are 1, 3, 9, 19, 27, 57, 171, 513.
What is 513 in binary?
513 in binary is 1000000001. In hexadecimal it's 201.
What is 513 as a Roman numeral?
513 in Roman numerals is DXIII.
What's the digit sum of 513?
Adding the digits of 513: 5 + 1 + 3 = 9.