315629057 has 2 divisors, whose sum is σ = 315629058. Its totient is φ = 315629056.

The previous prime is 315629053. The next prime is 315629059. The reversal of 315629057 is 750926513.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308915776 + 6713281 = 17576^2 + 2591^2 .

It is an emirp because it is prime and its reverse (750926513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315629057 - 2² = 315629053 is a prime.

Together with 315629059, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315629057.

It is not a weakly prime, because it can be changed into another prime (315629053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157814528 + 157814529.

It is an arithmetic number, because the mean of its divisors is an integer number (157814529).

Almost surely, 2^315629057 is an apocalyptic number.

It is an amenable number.

315629057 is a deficient number, since it is larger than the sum of its proper divisors (1).

315629057 is an equidigital number, since it uses as much as digits as its factorization.

315629057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 315629057 is about 17765.9521838825. The cubic root of 315629057 is about 680.8618376018.

The spelling of 315629057 in words is "three hundred fifteen million, six hundred twenty-nine thousand, fifty-seven".