561105260 has 24 divisors (see below), whose sum is σ = 1178876160. Its totient is φ = 224336384.

The previous prime is 561105227. The next prime is 561105271. The reversal of 561105260 is 62501165.

It is a super-2 number, since 2×561105260² = 629678225599335200, which contains 22 as substring.

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, 47861 + ... + 58419.

It is an arithmetic number, because the mean of its divisors is an integer number (49119840).

Almost surely, 2^561105260 is an apocalyptic number.

It is an amenable number.

561105260 is an abundant number, since it is smaller than the sum of its proper divisors (617770900).

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

561105260 is a wasteful number, since it uses less digits than its factorization.

561105260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13225 (or 13223 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 561105260 is about 23687.6605007755. The cubic root of 561105260 is about 824.7989764272.

The spelling of 561105260 in words is "five hundred sixty-one million, one hundred five thousand, two hundred sixty".