56563220 has 48 divisors (see below), whose sum is σ = 140141568. Its totient is φ = 18766080.

The previous prime is 56563217. The next prime is 56563237. The reversal of 56563220 is 2236565.

It is a happy number.

56563220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2177 + ... + 10856.

It is an arithmetic number, because the mean of its divisors is an integer number (2919616).

Almost surely, 2^56563220 is an apocalyptic number.

It is an amenable number.

56563220 is an abundant number, since it is smaller than the sum of its proper divisors (83578348).

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

56563220 is a wasteful number, since it uses less digits than its factorization.

56563220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13080 (or 13078 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 56563220 is about 7520.8523453130. The cubic root of 56563220 is about 383.8645807940.

Adding to 56563220 its reverse (2236565), we get a palindrome (58799785).

The spelling of 56563220 in words is "fifty-six million, five hundred sixty-three thousand, two hundred twenty".