56511648 has 48 divisors (see below), whose sum is σ = 164828160. Its totient is φ = 18836928.

The previous prime is 56511613. The next prime is 56511649. The reversal of 56511648 is 84611565.

56511648 is a `hidden beast` number, since 5 + 6 + 5 + 1 + 1 + 648 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (56511649) 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, 31840 + ... + 33567.

It is an arithmetic number, because the mean of its divisors is an integer number (3433920).

Almost surely, 2^56511648 is an apocalyptic number.

It is an amenable number.

56511648 is an abundant number, since it is smaller than the sum of its proper divisors (108316512).

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

56511648 is a wasteful number, since it uses less digits than its factorization.

56511648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65426 (or 65412 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 56511648 is about 7517.4229626914. The cubic root of 56511648 is about 383.7478813805.

The spelling of 56511648 in words is "fifty-six million, five hundred eleven thousand, six hundred forty-eight".