55518863 has 2 divisors, whose sum is σ = 55518864. Its totient is φ = 55518862.

The previous prime is 55518829. The next prime is 55518899. The reversal of 55518863 is 36881555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55518863 - 2⁸ = 55518607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55518863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55518163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27759431 + 27759432.

It is an arithmetic number, because the mean of its divisors is an integer number (27759432).

Almost surely, 2^55518863 is an apocalyptic number.

55518863 is a deficient number, since it is larger than the sum of its proper divisors (1).

55518863 is an equidigital number, since it uses as much as digits as its factorization.

55518863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144000, while the sum is 41.

The square root of 55518863 is about 7451.0981069907. The cubic root of 55518863 is about 381.4873907016.

The spelling of 55518863 in words is "fifty-five million, five hundred eighteen thousand, eight hundred sixty-three".