57215804 has 24 divisors (see below), whose sum is σ = 102316368. Its totient is φ = 27987840.

The previous prime is 57215803. The next prime is 57215849. The reversal of 57215804 is 40851275.

57215804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57215803) 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, 54872 + ... + 55904.

It is an arithmetic number, because the mean of its divisors is an integer number (4263182).

Almost surely, 2^57215804 is an apocalyptic number.

It is an amenable number.

57215804 is a deficient number, since it is larger than the sum of its proper divisors (45100564).

57215804 is a wasteful number, since it uses less digits than its factorization.

57215804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325 (or 1323 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 57215804 is about 7564.1129023832. The cubic root of 57215804 is about 385.3351868170.

The spelling of 57215804 in words is "fifty-seven million, two hundred fifteen thousand, eight hundred four".