57072258 has 12 divisors (see below), whose sum is σ = 123656598. Its totient is φ = 19024080.

The previous prime is 57072227. The next prime is 57072259. The reversal of 57072258 is 85227075.

57072258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 43917129 + 13155129 = 6627^2 + 3627^2 .

It is not an unprimeable number, because it can be changed into a prime (57072259) 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 5 ways as a sum of consecutive naturals, for example, 1585323 + ... + 1585358.

Almost surely, 2^57072258 is an apocalyptic number.

57072258 is an abundant number, since it is smaller than the sum of its proper divisors (66584340).

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

57072258 is a wasteful number, since it uses less digits than its factorization.

57072258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170689 (or 3170686 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 57072258 is about 7554.6183225892. The cubic root of 57072258 is about 385.0126672619.

The spelling of 57072258 in words is "fifty-seven million, seventy-two thousand, two hundred fifty-eight".