57032257 has 2 divisors, whose sum is σ = 57032258. Its totient is φ = 57032256.

The previous prime is 57032251. The next prime is 57032273. The reversal of 57032257 is 75223075.

57032257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39425841 + 17606416 = 6279^2 + 4196^2 .

It is a cyclic number.

It is not a de Polignac number, because 57032257 - 2²³ = 48643649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57032251) 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 as a sum of consecutive naturals, namely, 28516128 + 28516129.

It is an arithmetic number, because the mean of its divisors is an integer number (28516129).

Almost surely, 2^57032257 is an apocalyptic number.

It is an amenable number.

57032257 is a deficient number, since it is larger than the sum of its proper divisors (1).

57032257 is an equidigital number, since it uses as much as digits as its factorization.

57032257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 57032257 is about 7551.9704051327. The cubic root of 57032257 is about 384.9226965725.

The spelling of 57032257 in words is "fifty-seven million, thirty-two thousand, two hundred fifty-seven".