561156056 has 8 divisors (see below), whose sum is σ = 1052167620. Its totient is φ = 280578024.

The previous prime is 561156049. The next prime is 561156067. The reversal of 561156056 is 650651165.

561156056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×561156056² = 629792238370950272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35072246 + ... + 35072261.

Almost surely, 2^561156056 is an apocalyptic number.

It is an amenable number.

561156056 is a deficient number, since it is larger than the sum of its proper divisors (491011564).

561156056 is a wasteful number, since it uses less digits than its factorization.

561156056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70144513 (or 70144509 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 561156056 is about 23688.7326803272. The cubic root of 561156056 is about 824.8238649389.

The spelling of 561156056 in words is "five hundred sixty-one million, one hundred fifty-six thousand, fifty-six".