55543564 has 12 divisors (see below), whose sum is σ = 97711488. Its totient is φ = 27626000.

The previous prime is 55543547. The next prime is 55543571. The reversal of 55543564 is 46534555.

55543564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35587 + ... + 37114.

It is an arithmetic number, because the mean of its divisors is an integer number (8142624).

Almost surely, 2^55543564 is an apocalyptic number.

It is an amenable number.

55543564 is a deficient number, since it is larger than the sum of its proper divisors (42167924).

55543564 is a wasteful number, since it uses less digits than its factorization.

55543564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72896 (or 72894 counting only the distinct ones).

The product of its digits is 180000, while the sum is 37.

The square root of 55543564 is about 7452.7554635853. The cubic root of 55543564 is about 381.5439584001.

Subtracting from 55543564 its reverse (46534555), we obtain a palindrome (9009009).

The spelling of 55543564 in words is "fifty-five million, five hundred forty-three thousand, five hundred sixty-four".