54205520 has 40 divisors (see below), whose sum is σ = 133444584. Its totient is φ = 20406272.

The previous prime is 54205519. The next prime is 54205531. The reversal of 54205520 is 2550245.

It can be written as a sum of positive squares in 4 ways, for example, as 26915344 + 27290176 = 5188^2 + 5224^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 18569 + ... + 21288.

Almost surely, 2^54205520 is an apocalyptic number.

It is an amenable number.

54205520 is an abundant number, since it is smaller than the sum of its proper divisors (79239064).

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

54205520 is a wasteful number, since it uses less digits than its factorization.

54205520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39887 (or 39881 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 54205520 is about 7362.4398129968. The cubic root of 54205520 is about 378.4552245354.

Adding to 54205520 its reverse (2550245), we get a palindrome (56755765).

The spelling of 54205520 in words is "fifty-four million, two hundred five thousand, five hundred twenty".