561325604 has 24 divisors (see below), whose sum is σ = 1123980480. Its totient is φ = 240283296.

The previous prime is 561325571. The next prime is 561325627. The reversal of 561325604 is 406523165.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13127 + ... + 35985.

It is an arithmetic number, because the mean of its divisors is an integer number (46832520).

Almost surely, 2^561325604 is an apocalyptic number.

It is an amenable number.

561325604 is an abundant number, since it is smaller than the sum of its proper divisors (562654876).

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

561325604 is a wasteful number, since it uses less digits than its factorization.

561325604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23747 (or 23745 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 561325604 is about 23692.3110734263. The cubic root of 561325604 is about 824.9069274863.

Adding to 561325604 its reverse (406523165), we get a palindrome (967848769).

The spelling of 561325604 in words is "five hundred sixty-one million, three hundred twenty-five thousand, six hundred four".