53805680 has 40 divisors (see below), whose sum is σ = 132460272. Its totient is φ = 20255744.

The previous prime is 53805667. The next prime is 53805707. The reversal of 53805680 is 8650835.

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

It is a self number, because there is not a number n which added to its sum of digits gives 53805680.

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, 18422 + ... + 21141.

Almost surely, 2^53805680 is an apocalyptic number.

It is an amenable number.

53805680 is an abundant number, since it is smaller than the sum of its proper divisors (78654592).

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

53805680 is a wasteful number, since it uses less digits than its factorization.

53805680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39593 (or 39587 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 53805680 is about 7335.2355108749. The cubic root of 53805680 is about 377.5223851176.

The spelling of 53805680 in words is "fifty-three million, eight hundred five thousand, six hundred eighty".