54565520 has 20 divisors (see below), whose sum is σ = 126865020. Its totient is φ = 21826176.

The previous prime is 54565517. The next prime is 54565541. The reversal of 54565520 is 2556545.

It can be written as a sum of positive squares in 2 ways, for example, as 41576704 + 12988816 = 6448^2 + 3604^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 340955 + ... + 341114.

It is an arithmetic number, because the mean of its divisors is an integer number (6343251).

Almost surely, 2^54565520 is an apocalyptic number.

It is an amenable number.

54565520 is an abundant number, since it is smaller than the sum of its proper divisors (72299500).

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

54565520 is a wasteful number, since it uses less digits than its factorization.

54565520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682082 (or 682076 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 54565520 is about 7386.8477715464. The cubic root of 54565520 is about 379.2911994972.

The spelling of 54565520 in words is "fifty-four million, five hundred sixty-five thousand, five hundred twenty".