57133536 has 24 divisors (see below), whose sum is σ = 149975784. Its totient is φ = 19044480.

The previous prime is 57133519. The next prime is 57133537. The reversal of 57133536 is 63533175.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 57133497 and 57133506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57133537) 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, 297475 + ... + 297666.

It is an arithmetic number, because the mean of its divisors is an integer number (6248991).

Almost surely, 2^57133536 is an apocalyptic number.

It is an amenable number.

57133536 is an abundant number, since it is smaller than the sum of its proper divisors (92842248).

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

57133536 is a wasteful number, since it uses less digits than its factorization.

57133536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595154 (or 595146 counting only the distinct ones).

The product of its digits is 28350, while the sum is 33.

The square root of 57133536 is about 7558.6728993918. The cubic root of 57133536 is about 385.1504129214.

The spelling of 57133536 in words is "fifty-seven million, one hundred thirty-three thousand, five hundred thirty-six".