53665136 has 20 divisors (see below), whose sum is σ = 118830192. Its totient is φ = 22999296.

The previous prime is 53665127. The next prime is 53665151. The reversal of 53665136 is 63156635.

It is a junction number, because it is equal to n+sod(n) for n = 53665096 and 53665105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239465 + ... + 239688.

Almost surely, 2^53665136 is an apocalyptic number.

53665136 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

53665136 is an abundant number, since it is smaller than the sum of its proper divisors (65165056).

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

53665136 is a wasteful number, since it uses less digits than its factorization.

53665136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479168 (or 479162 counting only the distinct ones).

The product of its digits is 48600, while the sum is 35.

The square root of 53665136 is about 7325.6491862496. The cubic root of 53665136 is about 377.1933940105.

The spelling of 53665136 in words is "fifty-three million, six hundred sixty-five thousand, one hundred thirty-six".