315526491 has 48 divisors (see below), whose sum is σ = 538230784. Its totient is φ = 174353472.

The previous prime is 315526487. The next prime is 315526537. The reversal of 315526491 is 194625513.

315526491 is a `hidden beast` number, since 3 + 1 + 5 + 5 + 2 + 649 + 1 = 666.

It is not a de Polignac number, because 315526491 - 2² = 315526487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (315526441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 519510 + ... + 520116.

Almost surely, 2^315526491 is an apocalyptic number.

315526491 is a deficient number, since it is larger than the sum of its proper divisors (222704293).

315526491 is a wasteful number, since it uses less digits than its factorization.

315526491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880 (or 877 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 315526491 is about 17763.0653604607. The cubic root of 315526491 is about 680.7880792460.

It can be divided in two parts, 3155 and 26491, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 315526491 in words is "three hundred fifteen million, five hundred twenty-six thousand, four hundred ninety-one".