Numbers / 535

The Number 535

535 is composite: factorization 5 × 107. That gives 535 exactly 4 divisors: 1, 5, 107, 535. 535's proper divisors total just 113, 422 short of 535, the deficient case most of 535's neighbors share too. 535 is also a palindrome, since 535 reads identically forwards and backwards. 535 has a digit sum of 13; for 535, the digital root works out to 4. 535: 5 all divide 535 evenly, out of 2-12. 535 is 1000010111 in binary and 217 in hex; as a Roman numeral it's DXXXV.