56563491 has 8 divisors (see below), whose sum is σ = 77456464. Its totient is φ = 36689760.

The previous prime is 56563483. The next prime is 56563511. The reversal of 56563491 is 19436565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56563491 - 2³ = 56563483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56562491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254680 + ... + 254901.

It is an arithmetic number, because the mean of its divisors is an integer number (9682058).

Almost surely, 2^56563491 is an apocalyptic number.

56563491 is a deficient number, since it is larger than the sum of its proper divisors (20892973).

56563491 is a wasteful number, since it uses less digits than its factorization.

56563491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509621.

The product of its digits is 97200, while the sum is 39.

The square root of 56563491 is about 7520.8703618664. The cubic root of 56563491 is about 383.8651938375.

The spelling of 56563491 in words is "fifty-six million, five hundred sixty-three thousand, four hundred ninety-one".