561566434 has 32 divisors (see below), whose sum is σ = 1010693376. Its totient is φ = 230603520.

The previous prime is 561566419. The next prime is 561566449. The reversal of 561566434 is 434665165.

It is an interprime number because it is at equal distance from previous prime (561566419) and next prime (561566449).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7447 + ... + 34330.

It is an arithmetic number, because the mean of its divisors is an integer number (31584168).

Almost surely, 2^561566434 is an apocalyptic number.

561566434 is a deficient number, since it is larger than the sum of its proper divisors (449126942).

561566434 is a wasteful number, since it uses less digits than its factorization.

561566434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41850.

The product of its digits is 259200, while the sum is 40.

The square root of 561566434 is about 23697.3929789756. The cubic root of 561566434 is about 825.0248827512.

The spelling of 561566434 in words is "five hundred sixty-one million, five hundred sixty-six thousand, four hundred thirty-four".