53255520 has 144 divisors (see below), whose sum is σ = 187754112. Its totient is φ = 13731840.

The previous prime is 53255519. The next prime is 53255533. The reversal of 53255520 is 2555235.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44044 + ... + 45236.

It is an arithmetic number, because the mean of its divisors is an integer number (1303848).

Almost surely, 2^53255520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53255520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93877056).

53255520 is an abundant number, since it is smaller than the sum of its proper divisors (134498592).

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

53255520 is a wasteful number, since it uses less digits than its factorization.

53255520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245 (or 1234 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 53255520 is about 7297.6379740297. The cubic root of 53255520 is about 376.2312595751.

The spelling of 53255520 in words is "fifty-three million, two hundred fifty-five thousand, five hundred twenty".