odd, prime · 509th positive integer
The number 509
509 is an odd prime number. It is the 509th positive integer.
Quick reference
| Prime factorization | 509 (prime) |
| Divisors | 1, 509 |
| Binary | 111111101 |
| Hexadecimal | 0x1FD |
| Roman numeral | DIX |
| Digit sum | 14 |
| Properties | odd, prime |
Frequently asked
Is 509 a prime number?
Yes. 509 is prime — its only divisors are 1 and itself.
What are the factors of 509?
The factors (divisors) of 509 are 1, 509.
What is 509 in binary?
509 in binary is 111111101. In hexadecimal it's 1FD.
What is 509 as a Roman numeral?
509 in Roman numerals is DIX.
What's the digit sum of 509?
Adding the digits of 509: 5 + 0 + 9 = 14.