57213332 has 24 divisors (see below), whose sum is σ = 114975840. Its totient is φ = 24636960.

The previous prime is 57213329. The next prime is 57213353. The reversal of 57213332 is 23331275.

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, 33383 + ... + 35054.

It is an arithmetic number, because the mean of its divisors is an integer number (4790660).

Almost surely, 2^57213332 is an apocalyptic number.

It is an amenable number.

57213332 is an abundant number, since it is smaller than the sum of its proper divisors (57762508).

57213332 is a wasteful number, since it uses less digits than its factorization.

57213332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68471 (or 68469 counting only the distinct ones).

The product of its digits is 3780, while the sum is 26.

The square root of 57213332 is about 7563.9494974517. The cubic root of 57213332 is about 385.3296372880.

The spelling of 57213332 in words is "fifty-seven million, two hundred thirteen thousand, three hundred thirty-two".