505555005559 has 2 divisors, whose sum is σ = 505555005560. Its totient is φ = 505555005558.

The previous prime is 505555005547. The next prime is 505555005581. The reversal of 505555005559 is 955500555505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505555005559 - 2⁹ = 505555005047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505555005259) 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, 252777502779 + 252777502780.

It is an arithmetic number, because the mean of its divisors is an integer number (252777502780).

Almost surely, 2^505555005559 is an apocalyptic number.

505555005559 is a deficient number, since it is larger than the sum of its proper divisors (1).

505555005559 is an equidigital number, since it uses as much as digits as its factorization.

505555005559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3515625, while the sum is 49.

The spelling of 505555005559 in words is "five hundred five billion, five hundred fifty-five million, five thousand, five hundred fifty-nine".