53989164 has 18 divisors (see below), whose sum is σ = 136472700. Its totient is φ = 17996376.

The previous prime is 53989163. The next prime is 53989171. The reversal of 53989164 is 46198935.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (53989163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 749814 + ... + 749885.

Almost surely, 2^53989164 is an apocalyptic number.

It is an amenable number.

53989164 is an abundant number, since it is smaller than the sum of its proper divisors (82483536).

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

53989164 is a wasteful number, since it uses less digits than its factorization.

53989164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499709 (or 1499704 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 53989164 is about 7347.7318949455. The cubic root of 53989164 is about 377.9510308614.

The spelling of 53989164 in words is "fifty-three million, nine hundred eighty-nine thousand, one hundred sixty-four".