odd, composite · 57th positive integer
The number 57
57 is an odd composite number. It is the 57th positive integer.
Quick reference
| Prime factorization | 3 × 19 |
| Divisors | 1, 3, 19, 57 |
| Binary | 111001 |
| Hexadecimal | 0x39 |
| Roman numeral | LVII |
| Digit sum | 12 |
| Properties | odd, composite |
Frequently asked
Is 57 a prime number?
No. 57 is composite. Its prime factorization is 3 × 19.
What are the factors of 57?
The factors (divisors) of 57 are 1, 3, 19, 57.
What is 57 in binary?
57 in binary is 111001. In hexadecimal it's 39.
What is 57 as a Roman numeral?
57 in Roman numerals is LVII.
What's the digit sum of 57?
Adding the digits of 57: 5 + 7 = 12.