Numbers / 355

The Number 355

355 is composite: factorization 5 × 71. That gives 355 exactly 4 divisors: 1, 5, 71, 355. 355's proper divisors total just 77, 278 short of 355, the deficient case most of 355's neighbors share too. 355 has a digit sum of 13; for 355, the digital root works out to 4. 355: 5 all divide 355 evenly, out of 2-12. 355 is 101100011 in binary and 163 in hex; as a Roman numeral it's CCCLV.