57138332 has 12 divisors (see below), whose sum is σ = 103217856. Its totient is φ = 27647520.

The previous prime is 57138287. The next prime is 57138349. The reversal of 57138332 is 23383175.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230273 + ... + 230520.

It is an arithmetic number, because the mean of its divisors is an integer number (8601488).

Almost surely, 2^57138332 is an apocalyptic number.

It is an amenable number.

57138332 is a deficient number, since it is larger than the sum of its proper divisors (46079524).

57138332 is a wasteful number, since it uses less digits than its factorization.

57138332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460828 (or 460826 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 57138332 is about 7558.9901441925. The cubic root of 57138332 is about 385.1611896025.

The spelling of 57138332 in words is "fifty-seven million, one hundred thirty-eight thousand, three hundred thirty-two".