561156204 has 24 divisors (see below), whose sum is σ = 1496416768. Its totient is φ = 160330320.

The previous prime is 561156199. The next prime is 561156221. The reversal of 561156204 is 402651165.

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, 3340132 + ... + 3340299.

Almost surely, 2^561156204 is an apocalyptic number.

It is an amenable number.

561156204 is an abundant number, since it is smaller than the sum of its proper divisors (935260564).

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

561156204 is a wasteful number, since it uses less digits than its factorization.

561156204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6680445 (or 6680443 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 561156204 is about 23688.7358041749. The cubic root of 561156204 is about 824.8239374523.

The spelling of 561156204 in words is "five hundred sixty-one million, one hundred fifty-six thousand, two hundred four".