53664564 has 24 divisors (see below), whose sum is σ = 126122080. Its totient is φ = 17758944.

The previous prime is 53664557. The next prime is 53664593. The reversal of 53664564 is 46546635.

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, 14419 + ... + 17754.

Almost surely, 2^53664564 is an apocalyptic number.

It is an amenable number.

53664564 is an abundant number, since it is smaller than the sum of its proper divisors (72457516).

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

53664564 is a wasteful number, since it uses less digits than its factorization.

53664564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32319 (or 32317 counting only the distinct ones).

The product of its digits is 259200, while the sum is 39.

The square root of 53664564 is about 7325.6101452371. The cubic root of 53664564 is about 377.1920538767.

The spelling of 53664564 in words is "fifty-three million, six hundred sixty-four thousand, five hundred sixty-four".