odd, composite · 551st positive integer
The number 551
551 is an odd composite number. It is the 551st positive integer.
Quick reference
| Prime factorization | 19 × 29 |
| Divisors | 1, 19, 29, 551 |
| Binary | 1000100111 |
| Hexadecimal | 0x227 |
| Roman numeral | DLI |
| Digit sum | 11 |
| Properties | odd, composite |
Frequently asked
Is 551 a prime number?
No. 551 is composite. Its prime factorization is 19 × 29.
What are the factors of 551?
The factors (divisors) of 551 are 1, 19, 29, 551.
What is 551 in binary?
551 in binary is 1000100111. In hexadecimal it's 227.
What is 551 as a Roman numeral?
551 in Roman numerals is DLI.
What's the digit sum of 551?
Adding the digits of 551: 5 + 5 + 1 = 11.