56563776 has 84 divisors (see below), whose sum is σ = 163171632. Its totient is φ = 18733824.

The previous prime is 56563757. The next prime is 56563781. The reversal of 56563776 is 67736565.

56563776 is a `hidden beast` number, since 5 + 6 + 5 + 637 + 7 + 6 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

Its product of digits (793800) is a multiple of the sum of its prime factors (648).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162835 + ... + 163181.

Almost surely, 2^56563776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56563776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81585816).

56563776 is an abundant number, since it is smaller than the sum of its proper divisors (106607856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56563776 is a wasteful number, since it uses less digits than its factorization.

56563776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648 (or 635 counting only the distinct ones).

The product of its digits is 793800, while the sum is 45.

The square root of 56563776 is about 7520.8893091176. The cubic root of 56563776 is about 383.8658385490.

The spelling of 56563776 in words is "fifty-six million, five hundred sixty-three thousand, seven hundred seventy-six".