315508057 has 2 divisors, whose sum is σ = 315508058. Its totient is φ = 315508056.

The previous prime is 315508031. The next prime is 315508087. The reversal of 315508057 is 750805513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185068816 + 130439241 = 13604^2 + 11421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315508057 is a prime.

It is not a weakly prime, because it can be changed into another prime (315508087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157754028 + 157754029.

It is an arithmetic number, because the mean of its divisors is an integer number (157754029).

Almost surely, 2^315508057 is an apocalyptic number.

It is an amenable number.

315508057 is a deficient number, since it is larger than the sum of its proper divisors (1).

315508057 is an equidigital number, since it uses as much as digits as its factorization.

315508057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 315508057 is about 17762.5464672158. The cubic root of 315508057 is about 680.7748210968.

The spelling of 315508057 in words is "three hundred fifteen million, five hundred eight thousand, fifty-seven".