57158272 has 16 divisors (see below), whose sum is σ = 113870250. Its totient is φ = 28579072.

The previous prime is 57158261. The next prime is 57158279. The reversal of 57158272 is 27285175.

It can be written as a sum of positive squares in only one way, i.e., 56190016 + 968256 = 7496^2 + 984^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (57158279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223147 + ... + 223402.

Almost surely, 2^57158272 is an apocalyptic number.

It is an amenable number.

57158272 is a deficient number, since it is larger than the sum of its proper divisors (56711978).

57158272 is an equidigital number, since it uses as much as digits as its factorization.

57158272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446563 (or 446551 counting only the distinct ones).

The product of its digits is 39200, while the sum is 37.

The square root of 57158272 is about 7560.3089883946. The cubic root of 57158272 is about 385.2059886054.

The spelling of 57158272 in words is "fifty-seven million, one hundred fifty-eight thousand, two hundred seventy-two".