56543616 has 64 divisors (see below), whose sum is σ = 166892400. Its totient is φ = 18846720.

The previous prime is 56543593. The next prime is 56543621. The reversal of 56543616 is 61634565.

56543616 is a `hidden beast` number, since 56 + 543 + 61 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4725 + ... + 11636.

Almost surely, 2^56543616 is an apocalyptic number.

It is an amenable number.

56543616 is an abundant number, since it is smaller than the sum of its proper divisors (110348784).

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

56543616 is a wasteful number, since it uses less digits than its factorization.

56543616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16384 (or 16366 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 56543616 is about 7519.5489226416. The cubic root of 56543616 is about 383.8202283521.

The spelling of 56543616 in words is "fifty-six million, five hundred forty-three thousand, six hundred sixteen".