55555105597 has 2 divisors, whose sum is σ = 55555105598. Its totient is φ = 55555105596.

The previous prime is 55555105589. The next prime is 55555105607. The reversal of 55555105597 is 79550155555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50379598116 + 5175507481 = 224454^2 + 71941^2 .

It is a cyclic number.

It is not a de Polignac number, because 55555105597 - 2³ = 55555105589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55555105517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777552798 + 27777552799.

It is an arithmetic number, because the mean of its divisors is an integer number (27777552799).

Almost surely, 2^55555105597 is an apocalyptic number.

It is an amenable number.

55555105597 is a deficient number, since it is larger than the sum of its proper divisors (1).

55555105597 is an equidigital number, since it uses as much as digits as its factorization.

55555105597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4921875, while the sum is 52.

The spelling of 55555105597 in words is "fifty-five billion, five hundred fifty-five million, one hundred five thousand, five hundred ninety-seven".