odd, composite · 549th positive integer
The number 549
549 is an odd composite number. It is the 549th positive integer.
Quick reference
| Prime factorization | 3 × 3 × 61 |
| Divisors | 1, 3, 9, 61, 183, 549 |
| Binary | 1000100101 |
| Hexadecimal | 0x225 |
| Roman numeral | DXLIX |
| Digit sum | 18 |
| Properties | odd, composite |
Frequently asked
Is 549 a prime number?
No. 549 is composite. Its prime factorization is 3 × 3 × 61.
What are the factors of 549?
The factors (divisors) of 549 are 1, 3, 9, 61, 183, 549.
What is 549 in binary?
549 in binary is 1000100101. In hexadecimal it's 225.
What is 549 as a Roman numeral?
549 in Roman numerals is DXLIX.
What's the digit sum of 549?
Adding the digits of 549: 5 + 4 + 9 = 18.