57315380 has 24 divisors (see below), whose sum is σ = 121535232. Its totient is φ = 22702752.

The previous prime is 57315371. The next prime is 57315409. The reversal of 57315380 is 8351375.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11852 + ... + 15971.

It is an arithmetic number, because the mean of its divisors is an integer number (5063968).

Almost surely, 2^57315380 is an apocalyptic number.

It is an amenable number.

57315380 is an abundant number, since it is smaller than the sum of its proper divisors (64219852).

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

57315380 is a wasteful number, since it uses less digits than its factorization.

57315380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27935 (or 27933 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 57315380 is about 7570.6921744316. The cubic root of 57315380 is about 385.5585976937.

It can be divided in two parts, 5731 and 5380, that added together give a palindrome (11111).

The spelling of 57315380 in words is "fifty-seven million, three hundred fifteen thousand, three hundred eighty".