53663520 has 48 divisors (see below), whose sum is σ = 169041600. Its totient is φ = 14310144.

The previous prime is 53663503. The next prime is 53663557. The reversal of 53663520 is 2536635.

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 (30).

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, 55420 + ... + 56379.

It is an arithmetic number, because the mean of its divisors is an integer number (3521700).

Almost surely, 2^53663520 is an apocalyptic number.

It is an amenable number.

53663520 is an abundant number, since it is smaller than the sum of its proper divisors (115378080).

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

53663520 is a wasteful number, since it uses less digits than its factorization.

53663520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111817 (or 111809 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 53663520 is about 7325.5388880273. The cubic root of 53663520 is about 377.1896078737.

The spelling of 53663520 in words is "fifty-three million, six hundred sixty-three thousand, five hundred twenty".