57439318 has 16 divisors (see below), whose sum is σ = 93147120. Its totient is φ = 26472096.

The previous prime is 57439307. The next prime is 57439321. The reversal of 57439318 is 81393475.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19021 + ... + 21832.

It is an arithmetic number, because the mean of its divisors is an integer number (5821695).

Almost surely, 2^57439318 is an apocalyptic number.

57439318 is a deficient number, since it is larger than the sum of its proper divisors (35707802).

57439318 is a wasteful number, since it uses less digits than its factorization.

57439318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40911.

The product of its digits is 90720, while the sum is 40.

The square root of 57439318 is about 7578.8731352359. The cubic root of 57439318 is about 385.8363065119.

The spelling of 57439318 in words is "fifty-seven million, four hundred thirty-nine thousand, three hundred eighteen".