57313256 has 128 divisors (see below), whose sum is σ = 153135360. Its totient is φ = 19353600.

The previous prime is 57313237. The next prime is 57313271. The reversal of 57313256 is 65231375.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135926 + ... + 136346.

It is an arithmetic number, because the mean of its divisors is an integer number (1196370).

Almost surely, 2^57313256 is an apocalyptic number.

57313256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57313256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76567680).

57313256 is an abundant number, since it is smaller than the sum of its proper divisors (95822104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57313256 is a wasteful number, since it uses less digits than its factorization.

57313256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 471 counting only the distinct ones).

The product of its digits is 18900, while the sum is 32.

The square root of 57313256 is about 7570.5518953376. The cubic root of 57313256 is about 385.5538349431.

It can be divided in two parts, 57 and 313256, that added together give a palindrome (313313).

The spelling of 57313256 in words is "fifty-seven million, three hundred thirteen thousand, two hundred fifty-six".