55164563 has 2 divisors, whose sum is σ = 55164564. Its totient is φ = 55164562.

The previous prime is 55164559. The next prime is 55164601. The reversal of 55164563 is 36546155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55164563 - 2² = 55164559 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (55164503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27582281 + 27582282.

It is an arithmetic number, because the mean of its divisors is an integer number (27582282).

Almost surely, 2^55164563 is an apocalyptic number.

55164563 is a deficient number, since it is larger than the sum of its proper divisors (1).

55164563 is an equidigital number, since it uses as much as digits as its factorization.

55164563 is an odious number, because the sum of its binary digits is odd.

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

The square root of 55164563 is about 7427.2850355968. The cubic root of 55164563 is about 380.6741564601.

The spelling of 55164563 in words is "fifty-five million, one hundred sixty-four thousand, five hundred sixty-three".