56561776 has 20 divisors (see below), whose sum is σ = 110199544. Its totient is φ = 28123200.

The previous prime is 56561749. The next prime is 56561779. The reversal of 56561776 is 67716565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56561779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6870 + ... + 12661.

Almost surely, 2^56561776 is an apocalyptic number.

It is an amenable number.

56561776 is a deficient number, since it is larger than the sum of its proper divisors (53637768).

56561776 is a wasteful number, since it uses less digits than its factorization.

56561776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19720 (or 19714 counting only the distinct ones).

The product of its digits is 264600, while the sum is 43.

The square root of 56561776 is about 7520.7563449430. The cubic root of 56561776 is about 383.8613142121.

The spelling of 56561776 in words is "fifty-six million, five hundred sixty-one thousand, seven hundred seventy-six".