561105054 has 24 divisors (see below), whose sum is σ = 1217363160. Its totient is φ = 186783408.

The previous prime is 561105031. The next prime is 561105059. The reversal of 561105054 is 450501165.

It is a happy number.

561105054 is a `hidden beast` number, since 561 + 1 + 0 + 50 + 54 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561105059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6964 + ... + 34215.

It is an arithmetic number, because the mean of its divisors is an integer number (50723465).

Almost surely, 2^561105054 is an apocalyptic number.

561105054 is an abundant number, since it is smaller than the sum of its proper divisors (656258106).

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

561105054 is a wasteful number, since it uses less digits than its factorization.

561105054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41944 (or 41941 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 561105054 is about 23687.6561525196. The cubic root of 561105054 is about 824.7988754903.

The spelling of 561105054 in words is "five hundred sixty-one million, one hundred five thousand, fifty-four".