56611880 has 32 divisors (see below), whose sum is σ = 137176200. Its totient is φ = 20902656.

The previous prime is 56611879. The next prime is 56611889. The reversal of 56611880 is 8811665.

It can be written as a sum of positive squares in 4 ways, for example, as 37724164 + 18887716 = 6142^2 + 4346^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 56611880.

It is not an unprimeable number, because it can be changed into a prime (56611889) 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, 53915 + ... + 54954.

Almost surely, 2^56611880 is an apocalyptic number.

It is an amenable number.

56611880 is an abundant number, since it is smaller than the sum of its proper divisors (80564320).

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

56611880 is a wasteful number, since it uses less digits than its factorization.

56611880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108893 (or 108889 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 56611880 is about 7524.0866555350. The cubic root of 56611880 is about 383.9746257828.

The spelling of 56611880 in words is "fifty-six million, six hundred eleven thousand, eight hundred eighty".