odd, composite, palindrome · 505th positive integer
The number 505
505 is an odd composite number. It is the 505th positive integer.
Quick reference
| Prime factorization | 5 × 101 |
| Divisors | 1, 5, 101, 505 |
| Binary | 111111001 |
| Hexadecimal | 0x1F9 |
| Roman numeral | DV |
| Digit sum | 10 |
| Properties | odd, composite, palindrome |
Frequently asked
Is 505 a prime number?
No. 505 is composite. Its prime factorization is 5 × 101.
What are the factors of 505?
The factors (divisors) of 505 are 1, 5, 101, 505.
What is 505 in binary?
505 in binary is 111111001. In hexadecimal it's 1F9.
What is 505 as a Roman numeral?
505 in Roman numerals is DV.
What's the digit sum of 505?
Adding the digits of 505: 5 + 0 + 5 = 10.