Numbers / 461

The Number 461

461 is prime: only 1 and 461 divide it evenly; the next prime after 461 is 463. 461's proper divisors total just 1, 460 short of 461, the deficient case most of 461's neighbors share too. 461 has a digit sum of 11; for 461, the digital root works out to 2. 461 shares no factor with 2-12; 461's own divisors start beyond that range. 461 is 111001101 in binary and 1CD in hex; as a Roman numeral it's CDLXI.