53908644 has 12 divisors (see below), whose sum is σ = 125786864. Its totient is φ = 17969544.

The previous prime is 53908637. The next prime is 53908663. The reversal of 53908644 is 44680935.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×53908644² = 5812283795837472, which contains 22 as substring.

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, 2246182 + ... + 2246205.

Almost surely, 2^53908644 is an apocalyptic number.

It is an amenable number.

53908644 is an abundant number, since it is smaller than the sum of its proper divisors (71878220).

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

53908644 is a wasteful number, since it uses less digits than its factorization.

53908644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4492394 (or 4492392 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 53908644 is about 7342.2506086349. The cubic root of 53908644 is about 377.7630440108.

The spelling of 53908644 in words is "fifty-three million, nine hundred eight thousand, six hundred forty-four".