54565728 has 48 divisors (see below), whose sum is σ = 163699200. Its totient is φ = 15590016.

The previous prime is 54565703. The next prime is 54565741. The reversal of 54565728 is 82756545.

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 (42).

It is a self number, because there is not a number n which added to its sum of digits gives 54565728.

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, 39928 + ... + 41271.

It is an arithmetic number, because the mean of its divisors is an integer number (3410400).

Almost surely, 2^54565728 is an apocalyptic number.

It is an amenable number.

54565728 is an abundant number, since it is smaller than the sum of its proper divisors (109133472).

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

54565728 is a wasteful number, since it uses less digits than its factorization.

54565728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81219 (or 81211 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

The square root of 54565728 is about 7386.8618506102. The cubic root of 54565728 is about 379.2916814406.

The spelling of 54565728 in words is "fifty-four million, five hundred sixty-five thousand, seven hundred twenty-eight".