315564797 has 2 divisors, whose sum is σ = 315564798. Its totient is φ = 315564796.

The previous prime is 315564763. The next prime is 315564811. The reversal of 315564797 is 797465513.

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., 179399236 + 136165561 = 13394^2 + 11669^2 .

It is a cyclic number.

It is not a de Polignac number, because 315564797 - 2¹² = 315560701 is a prime.

It is a super-2 number, since 2×315564797² = 199162282211302418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315564737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157782398 + 157782399.

It is an arithmetic number, because the mean of its divisors is an integer number (157782399).

Almost surely, 2^315564797 is an apocalyptic number.

It is an amenable number.

315564797 is a deficient number, since it is larger than the sum of its proper divisors (1).

315564797 is an equidigital number, since it uses as much as digits as its factorization.

315564797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 793800, while the sum is 47.

The square root of 315564797 is about 17764.1435763169. The cubic root of 315564797 is about 680.8156281350.

The spelling of 315564797 in words is "three hundred fifteen million, five hundred sixty-four thousand, seven hundred ninety-seven".