Numbers / 175

The Number 175

175 is composite: factorization 5^2 × 7. That gives 175 exactly 6 divisors: 1, 5, 7, 25, 35, 175. 175's proper divisors total just 73, 102 short of 175, the deficient case most of 175's neighbors share too. 175 has a digit sum of 13; for 175, the digital root works out to 4. 175: 5, 7 all divide 175 evenly, out of 2-12. 175 is 10101111 in binary and AF in hex; as a Roman numeral it's CLXXV.