Numbers / 275

The Number 275

275 is composite: factorization 5^2 × 11. That gives 275 exactly 6 divisors: 1, 5, 11, 25, 55, 275. 275's proper divisors total just 97, 178 short of 275, the deficient case most of 275's neighbors share too. 275 has a digit sum of 14; for 275, the digital root works out to 5. 275: 5, 11 all divide 275 evenly, out of 2-12. 275 is 100010011 in binary and 113 in hex; as a Roman numeral it's CCLXXV.