53681856 has 28 divisors (see below), whose sum is σ = 142033752. Its totient is φ = 17893888.

The previous prime is 53681819. The next prime is 53681899. The reversal of 53681856 is 65818635.

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, 139605 + ... + 139988.

It is an arithmetic number, because the mean of its divisors is an integer number (5072634).

Almost surely, 2^53681856 is an apocalyptic number.

It is an amenable number.

53681856 is an abundant number, since it is smaller than the sum of its proper divisors (88351896).

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

53681856 is a wasteful number, since it uses less digits than its factorization.

53681856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279608 (or 279598 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The square root of 53681856 is about 7326.7902931638. The cubic root of 53681856 is about 377.2325629456.

The spelling of 53681856 in words is "fifty-three million, six hundred eighty-one thousand, eight hundred fifty-six".