56591648 has 24 divisors (see below), whose sum is σ = 114428412. Its totient is φ = 27530496.

The previous prime is 56591627. The next prime is 56591669. The reversal of 56591648 is 84619565.

It is an interprime number because it is at equal distance from previous prime (56591627) and next prime (56591669).

It can be written as a sum of positive squares in 2 ways, for example, as 53993104 + 2598544 = 7348^2 + 1612^2 .

It is a super-3 number, since 3×56591648³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 56591599 and 56591608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22715 + ... + 25082.

Almost surely, 2^56591648 is an apocalyptic number.

It is an amenable number.

56591648 is an abundant number, since it is smaller than the sum of its proper divisors (57836764).

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

56591648 is a wasteful number, since it uses less digits than its factorization.

56591648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47844 (or 47836 counting only the distinct ones).

The product of its digits is 259200, while the sum is 44.

The square root of 56591648 is about 7522.7420532675. The cubic root of 56591648 is about 383.9288786107.

The spelling of 56591648 in words is "fifty-six million, five hundred ninety-one thousand, six hundred forty-eight".