55308863 has 2 divisors, whose sum is σ = 55308864. Its totient is φ = 55308862.

The previous prime is 55308857. The next prime is 55308907. The reversal of 55308863 is 36880355.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55308863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55308823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27654431 + 27654432.

It is an arithmetic number, because the mean of its divisors is an integer number (27654432).

Almost surely, 2^55308863 is an apocalyptic number.

55308863 is a deficient number, since it is larger than the sum of its proper divisors (1).

55308863 is an equidigital number, since it uses as much as digits as its factorization.

55308863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 55308863 is about 7436.9928734671. The cubic root of 55308863 is about 381.0057911828.

The spelling of 55308863 in words is "fifty-five million, three hundred eight thousand, eight hundred sixty-three".