55837564 has 12 divisors (see below), whose sum is σ = 99988504. Its totient is φ = 27269424.

The previous prime is 55837559. The next prime is 55837589. The reversal of 55837564 is 46573855.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 55837564.

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, 162147 + ... + 162490.

Almost surely, 2^55837564 is an apocalyptic number.

It is an amenable number.

55837564 is a deficient number, since it is larger than the sum of its proper divisors (44150940).

55837564 is a wasteful number, since it uses less digits than its factorization.

55837564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324684 (or 324682 counting only the distinct ones).

The product of its digits is 504000, while the sum is 43.

The square root of 55837564 is about 7472.4536800170. The cubic root of 55837564 is about 382.2159629681.

The spelling of 55837564 in words is "fifty-five million, eight hundred thirty-seven thousand, five hundred sixty-four".