53686560 has 48 divisors (see below), whose sum is σ = 169114176. Its totient is φ = 14316288.

The previous prime is 53686547. The next prime is 53686603. The reversal of 53686560 is 6568635.

It is a tau number, because it is divible by the number of its divisors (48).

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, 55444 + ... + 56403.

It is an arithmetic number, because the mean of its divisors is an integer number (3523212).

Almost surely, 2^53686560 is an apocalyptic number.

It is an amenable number.

53686560 is an abundant number, since it is smaller than the sum of its proper divisors (115427616).

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

53686560 is a wasteful number, since it uses less digits than its factorization.

53686560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111865 (or 111857 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 53686560 is about 7327.1112998234. Note that the first 3 decimals coincide. The cubic root of 53686560 is about 377.2435812566.

The spelling of 53686560 in words is "fifty-three million, six hundred eighty-six thousand, five hundred sixty".