55555550599 has 2 divisors, whose sum is σ = 55555550600. Its totient is φ = 55555550598.

The previous prime is 55555550597. The next prime is 55555550623. The reversal of 55555550599 is 99505555555.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55555550599 - 2¹ = 55555550597 is a prime.

Together with 55555550597, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55555550597) 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, 27777775299 + 27777775300.

It is an arithmetic number, because the mean of its divisors is an integer number (27777775300).

Almost surely, 2^55555550599 is an apocalyptic number.

55555550599 is a deficient number, since it is larger than the sum of its proper divisors (1).

55555550599 is an equidigital number, since it uses as much as digits as its factorization.

55555550599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31640625, while the sum is 58.

The spelling of 55555550599 in words is "fifty-five billion, five hundred fifty-five million, five hundred fifty thousand, five hundred ninety-nine".