Numbers / 565

The Number 565

565 is composite: factorization 5 × 113. That gives 565 exactly 4 divisors: 1, 5, 113, 565. 565's proper divisors total just 119, 446 short of 565, the deficient case most of 565's neighbors share too. 565 is also a palindrome, since 565 reads identically forwards and backwards. 565 has a digit sum of 16; for 565, the digital root works out to 7. 565: 5 all divide 565 evenly, out of 2-12. 565 is 1000110101 in binary and 235 in hex; as a Roman numeral it's DLXV.