561139596 has 24 divisors (see below), whose sum is σ = 1454806640. Its totient is φ = 187046496.

The previous prime is 561139591. The next prime is 561139609. The reversal of 561139596 is 695931165.

561139596 is a `hidden beast` number, since 56 + 1 + 1 + 3 + 9 + 596 = 666.

It is not an unprimeable number, because it can be changed into a prime (561139591) 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, 2597761 + ... + 2597976.

Almost surely, 2^561139596 is an apocalyptic number.

It is an amenable number.

561139596 is an abundant number, since it is smaller than the sum of its proper divisors (893667044).

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

561139596 is a wasteful number, since it uses less digits than its factorization.

561139596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5195750 (or 5195742 counting only the distinct ones).

The product of its digits is 218700, while the sum is 45.

The square root of 561139596 is about 23688.3852552258. The cubic root of 561139596 is about 824.8158001986.

The spelling of 561139596 in words is "five hundred sixty-one million, one hundred thirty-nine thousand, five hundred ninety-six".