odd, composite · 365th positive integer
The number 365
365 is an odd composite number. It's known as the number of days in a non-leap year. It is the 365th positive integer.
Quick reference
| Prime factorization | 5 × 73 |
| Divisors | 1, 5, 73, 365 |
| Binary | 101101101 |
| Hexadecimal | 0x16D |
| Roman numeral | CCCLXV |
| Digit sum | 14 |
| Properties | odd, composite |
Why 365 is notable
The number of days in a non-leap year.
Reading 365 in NumGrid context
365 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.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for 365 is typically a peer within positive integers within the NumGrid target pool with similar size, similar exposure, or similar geography — not the national-level summary alone.
Frequently asked
Is 365 a prime number?
No. 365 is composite. Its prime factorization is 5 × 73.
What are the factors of 365?
The factors (divisors) of 365 are 1, 5, 73, 365.
What is 365 in binary?
365 in binary is 101101101. In hexadecimal it's 16D.
What is 365 as a Roman numeral?
365 in Roman numerals is CCCLXV.
What's the digit sum of 365?
Adding the digits of 365: 3 + 6 + 5 = 14.