55043564 has 12 divisors (see below), whose sum is σ = 96415704. Its totient is φ = 27496224.

The previous prime is 55043557. The next prime is 55043591. The reversal of 55043564 is 46534055.

It is a self number, because there is not a number n which added to its sum of digits gives 55043564.

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, 1049 + ... + 10544.

It is an arithmetic number, because the mean of its divisors is an integer number (8034642).

Almost surely, 2^55043564 is an apocalyptic number.

It is an amenable number.

55043564 is a deficient number, since it is larger than the sum of its proper divisors (41372140).

55043564 is a wasteful number, since it uses less digits than its factorization.

55043564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12784 (or 12782 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 55043564 is about 7419.1349900106. The cubic root of 55043564 is about 380.3956267421.

The spelling of 55043564 in words is "fifty-five million, forty-three thousand, five hundred sixty-four".