55564163 has 2 divisors, whose sum is σ = 55564164. Its totient is φ = 55564162.

The previous prime is 55564153. The next prime is 55564207. The reversal of 55564163 is 36146555.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55564163 is a prime.

It is not a weakly prime, because it can be changed into another prime (55564123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27782081 + 27782082.

It is an arithmetic number, because the mean of its divisors is an integer number (27782082).

Almost surely, 2^55564163 is an apocalyptic number.

55564163 is a deficient number, since it is larger than the sum of its proper divisors (1).

55564163 is an equidigital number, since it uses as much as digits as its factorization.

55564163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 35.

The square root of 55564163 is about 7454.1373075628. The cubic root of 55564163 is about 381.5911192953.

The spelling of 55564163 in words is "fifty-five million, five hundred sixty-four thousand, one hundred sixty-three".