561073239 has 12 divisors (see below), whose sum is σ = 818308816. Its totient is φ = 370416672.

The previous prime is 561073231. The next prime is 561073241. The reversal of 561073239 is 932370165.

561073239 is a `hidden beast` number, since 5 + 610 + 7 + 3 + 2 + 39 = 666.

It is not a de Polignac number, because 561073239 - 2³ = 561073231 is a prime.

It is a super-2 number, since 2×561073239² = 629606359043902242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561073231) 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, 301702 + ... + 303555.

Almost surely, 2^561073239 is an apocalyptic number.

561073239 is a deficient number, since it is larger than the sum of its proper divisors (257235577).

561073239 is a wasteful number, since it uses less digits than its factorization.

561073239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605366 (or 605363 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 561073239 is about 23686.9845906987. The cubic root of 561073239 is about 824.7832863286.

The spelling of 561073239 in words is "five hundred sixty-one million, seventy-three thousand, two hundred thirty-nine".