57133640 has 32 divisors (see below), whose sum is σ = 128770560. Its totient is φ = 22814400.

The previous prime is 57133607. The next prime is 57133649. The reversal of 57133640 is 4633175.

57133640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (57133649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38105 + ... + 39575.

It is an arithmetic number, because the mean of its divisors is an integer number (4024080).

Almost surely, 2^57133640 is an apocalyptic number.

It is an amenable number.

57133640 is an abundant number, since it is smaller than the sum of its proper divisors (71636920).

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

57133640 is a wasteful number, since it uses less digits than its factorization.

57133640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453 (or 2449 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 57133640 is about 7558.6797789032. The cubic root of 57133640 is about 385.1506466173.

The spelling of 57133640 in words is "fifty-seven million, one hundred thirty-three thousand, six hundred forty".