55564764 has 12 divisors (see below), whose sum is σ = 129651144. Its totient is φ = 18521584.

The previous prime is 55564739. The next prime is 55564793. The reversal of 55564764 is 46746555.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2315187 + ... + 2315210.

It is an arithmetic number, because the mean of its divisors is an integer number (10804262).

Almost surely, 2^55564764 is an apocalyptic number.

It is an amenable number.

55564764 is an abundant number, since it is smaller than the sum of its proper divisors (74086380).

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

55564764 is a wasteful number, since it uses less digits than its factorization.

55564764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4630404 (or 4630402 counting only the distinct ones).

The product of its digits is 504000, while the sum is 42.

The square root of 55564764 is about 7454.1776206366. The cubic root of 55564764 is about 381.5924950948.

The spelling of 55564764 in words is "fifty-five million, five hundred sixty-four thousand, seven hundred sixty-four".