561096531 has 16 divisors (see below), whose sum is σ = 846940320. Its totient is φ = 367005600.

The previous prime is 561096493. The next prime is 561096539. The reversal of 561096531 is 135690165.

561096531 is a `hidden beast` number, since 5 + 610 + 9 + 6 + 5 + 31 = 666.

561096531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 561096531 - 2¹⁷ = 560965459 is a prime.

It is a super-2 number, since 2×561096531² = 629658634200467922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561096539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194620 + ... + 197481.

It is an arithmetic number, because the mean of its divisors is an integer number (52933770).

Almost surely, 2^561096531 is an apocalyptic number.

561096531 is a deficient number, since it is larger than the sum of its proper divisors (285843789).

561096531 is a wasteful number, since it uses less digits than its factorization.

561096531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392163 (or 392157 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 561096531 is about 23687.4762480092. The cubic root of 561096531 is about 824.7946993285.

The spelling of 561096531 in words is "five hundred sixty-one million, ninety-six thousand, five hundred thirty-one".