315150561 has 32 divisors (see below), whose sum is σ = 518970240. Its totient is φ = 187387200.

The previous prime is 315150551. The next prime is 315150581. The reversal of 315150561 is 165051513.

315150561 is a `hidden beast` number, since 3 + 1 + 51 + 50 + 561 = 666.

It is not a de Polignac number, because 315150561 - 2¹¹ = 315148513 is a prime.

It is a super-2 number, since 2×315150561² = 198639752197229442, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (315150551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5731 + ... + 25751.

It is an arithmetic number, because the mean of its divisors is an integer number (16217820).

Almost surely, 2^315150561 is an apocalyptic number.

It is an amenable number.

315150561 is a deficient number, since it is larger than the sum of its proper divisors (203819679).

315150561 is a wasteful number, since it uses less digits than its factorization.

315150561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20094 (or 20088 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 315150561 is about 17752.4804182402. The cubic root of 315150561 is about 680.5175997160.

The spelling of 315150561 in words is "three hundred fifteen million, one hundred fifty thousand, five hundred sixty-one".