2531604564 has 24 divisors (see below), whose sum is σ = 6563419520. Its totient is φ = 843868152.

The previous prime is 2531604563. The next prime is 2531604571. The reversal of 2531604564 is 4654061352.

2531604564 is a `hidden beast` number, since 2 + 5 + 31 + 60 + 4 + 564 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531604563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11720284 + ... + 11720499.

Almost surely, 2^2531604564 is an apocalyptic number.

It is an amenable number.

2531604564 is an abundant number, since it is smaller than the sum of its proper divisors (4031814956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2531604564 is a wasteful number, since it uses less digits than its factorization.

2531604564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23440796 (or 23440788 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 2531604564 is about 50315.0530557208. The cubic root of 2531604564 is about 1362.9040747935.

The spelling of 2531604564 in words is "two billion, five hundred thirty-one million, six hundred four thousand, five hundred sixty-four".