53081856 has 54 divisors (see below), whose sum is σ = 153054720. Its totient is φ = 17693184.

The previous prime is 53081849. The next prime is 53081867. The reversal of 53081856 is 65818035.

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

It is a self number, because there is not a number n which added to its sum of digits gives 53081856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9216 + ... + 13823.

Almost surely, 2^53081856 is an apocalyptic number.

It is an amenable number.

53081856 is an abundant number, since it is smaller than the sum of its proper divisors (99972864).

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

53081856 is a wasteful number, since it uses less digits than its factorization.

53081856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23061 (or 23044 counting only the distinct ones).

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

The square root of 53081856 is about 7285.7296134293. The cubic root of 53081856 is about 375.8218561574.

The spelling of 53081856 in words is "fifty-three million, eighty-one thousand, eight hundred fifty-six".