57130257 has 16 divisors (see below), whose sum is σ = 79125120. Its totient is φ = 36634752.

The previous prime is 57130247. The next prime is 57130267. The reversal of 57130257 is 75203175.

It is an interprime number because it is at equal distance from previous prime (57130247) and next prime (57130267).

It is not a de Polignac number, because 57130257 - 2⁸ = 57130001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57130247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6988 + ... + 12770.

It is an arithmetic number, because the mean of its divisors is an integer number (4945320).

Almost surely, 2^57130257 is an apocalyptic number.

It is an amenable number.

57130257 is a deficient number, since it is larger than the sum of its proper divisors (21994863).

57130257 is a wasteful number, since it uses less digits than its factorization.

57130257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5912.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 57130257 is about 7558.4559931245. The cubic root of 57130257 is about 385.1430446140.

The spelling of 57130257 in words is "fifty-seven million, one hundred thirty thousand, two hundred fifty-seven".