57317257 has 2 divisors, whose sum is σ = 57317258. Its totient is φ = 57317256.

The previous prime is 57317231. The next prime is 57317269. The reversal of 57317257 is 75271375.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51538041 + 5779216 = 7179^2 + 2404^2 .

It is a cyclic number.

It is not a de Polignac number, because 57317257 - 2¹⁵ = 57284489 is a prime.

It is not a weakly prime, because it can be changed into another prime (57312257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28658628 + 28658629.

It is an arithmetic number, because the mean of its divisors is an integer number (28658629).

Almost surely, 2^57317257 is an apocalyptic number.

It is an amenable number.

57317257 is a deficient number, since it is larger than the sum of its proper divisors (1).

57317257 is an equidigital number, since it uses as much as digits as its factorization.

57317257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51450, while the sum is 37.

The square root of 57317257 is about 7570.8161383037. The cubic root of 57317257 is about 385.5628064860.

The spelling of 57317257 in words is "fifty-seven million, three hundred seventeen thousand, two hundred fifty-seven".