Numbers / 97

The Number 97

97 is prime: only 1 and 97 divide it evenly; the next prime after 97 is 101. 97's proper divisors total just 1, 96 short of 97, the deficient case most of 97's neighbors share too. 97 has a digit sum of 16; for 97, the digital root works out to 7. 97 shares no factor with 2-12; 97's own divisors start beyond that range. 97 is 1100001 in binary and 61 in hex; as a Roman numeral it's XCVII.