561090546 has 12 divisors (see below), whose sum is σ = 1215696222. Its totient is φ = 187030176.

The previous prime is 561090503. The next prime is 561090581. The reversal of 561090546 is 645090165.

561090546 is a `hidden beast` number, since 5 + 6 + 109 + 0 + 546 = 666.

It can be written as a sum of positive squares in only one way, i.e., 364389921 + 196700625 = 19089^2 + 14025^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 561090546.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15585831 + ... + 15585866.

Almost surely, 2^561090546 is an apocalyptic number.

561090546 is an abundant number, since it is smaller than the sum of its proper divisors (654605676).

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

561090546 is a wasteful number, since it uses less digits than its factorization.

561090546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31171705 (or 31171702 counting only the distinct ones).

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

The square root of 561090546 is about 23687.3499150918. The cubic root of 561090546 is about 824.7917667293.

The spelling of 561090546 in words is "five hundred sixty-one million, ninety thousand, five hundred forty-six".