5555521859 has 2 divisors, whose sum is σ = 5555521860. Its totient is φ = 5555521858.

The previous prime is 5555521841. The next prime is 5555521861. The reversal of 5555521859 is 9581255555.

5555521859 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5555521859 is a prime.

Together with 5555521861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5555521759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777760929 + 2777760930.

It is an arithmetic number, because the mean of its divisors is an integer number (2777760930).

Almost surely, 2^5555521859 is an apocalyptic number.

5555521859 is a deficient number, since it is larger than the sum of its proper divisors (1).

5555521859 is an equidigital number, since it uses as much as digits as its factorization.

5555521859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2250000, while the sum is 50.

The square root of 5555521859 is about 74535.3732062837. The cubic root of 5555521859 is about 1771.0940345038.

The spelling of 5555521859 in words is "five billion, five hundred fifty-five million, five hundred twenty-one thousand, eight hundred fifty-nine".