Numbers / 593

The Number 593

593 is prime: only 1 and 593 divide it evenly; the next prime after 593 is 599. 593's proper divisors total just 1, 592 short of 593, the deficient case most of 593's neighbors share too. 593 has a digit sum of 17; for 593, the digital root works out to 8. 593 shares no factor with 2-12; 593's own divisors start beyond that range. 593 is 1001010001 in binary and 251 in hex; as a Roman numeral it's DXCIII.