315172585 has 64 divisors (see below), whose sum is σ = 484323840. Its totient is φ = 191600640.

The previous prime is 315172579. The next prime is 315172591. The reversal of 315172585 is 585271513.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (315172579) and next prime (315172591).

It is not a de Polignac number, because 315172585 - 2⁷ = 315172457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1741195 + ... + 1741375.

It is an arithmetic number, because the mean of its divisors is an integer number (7567560).

Almost surely, 2^315172585 is an apocalyptic number.

315172585 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

315172585 is a deficient number, since it is larger than the sum of its proper divisors (169151255).

315172585 is a wasteful number, since it uses less digits than its factorization.

315172585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338.

The product of its digits is 42000, while the sum is 37.

The square root of 315172585 is about 17753.1007150864. The cubic root of 315172585 is about 680.5334517905.

The spelling of 315172585 in words is "three hundred fifteen million, one hundred seventy-two thousand, five hundred eighty-five".