53508636 has 36 divisors (see below), whose sum is σ = 142378600. Its totient is φ = 16897248.

The previous prime is 53508629. The next prime is 53508659. The reversal of 53508636 is 63680535.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 53508636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38431 + ... + 39798.

Almost surely, 2^53508636 is an apocalyptic number.

It is an amenable number.

53508636 is an abundant number, since it is smaller than the sum of its proper divisors (88869964).

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

53508636 is a wasteful number, since it uses less digits than its factorization.

53508636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78258 (or 78253 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 53508636 is about 7314.9597401490. The cubic root of 53508636 is about 376.8263758296.

The spelling of 53508636 in words is "fifty-three million, five hundred eight thousand, six hundred thirty-six".