57533232 has 20 divisors (see below), whose sum is σ = 148627640. Its totient is φ = 19177728.

The previous prime is 57533227. The next prime is 57533233. The reversal of 57533232 is 23233575.

It is a self number, because there is not a number n which added to its sum of digits gives 57533232.

It is not an unprimeable number, because it can be changed into a prime (57533233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599257 + ... + 599352.

It is an arithmetic number, because the mean of its divisors is an integer number (7431382).

Almost surely, 2^57533232 is an apocalyptic number.

It is an amenable number.

57533232 is an abundant number, since it is smaller than the sum of its proper divisors (91094408).

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

57533232 is a wasteful number, since it uses less digits than its factorization.

57533232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198620 (or 1198614 counting only the distinct ones).

The product of its digits is 18900, while the sum is 30.

The square root of 57533232 is about 7585.0663807247. The cubic root of 57533232 is about 386.0464743992.

The spelling of 57533232 in words is "fifty-seven million, five hundred thirty-three thousand, two hundred thirty-two".