505005559 has 2 divisors, whose sum is σ = 505005560. Its totient is φ = 505005558.

The previous prime is 505005521. The next prime is 505005581. The reversal of 505005559 is 955500505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505005559 - 2¹¹ = 505003511 is a prime.

It is a super-2 number, since 2×505005559² = 510061229241804962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505015559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252502779 + 252502780.

It is an arithmetic number, because the mean of its divisors is an integer number (252502780).

Almost surely, 2^505005559 is an apocalyptic number.

505005559 is a deficient number, since it is larger than the sum of its proper divisors (1).

505005559 is an equidigital number, since it uses as much as digits as its factorization.

505005559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28125, while the sum is 34.

The square root of 505005559 is about 22472.3287400305. The cubic root of 505005559 is about 796.3403461746.

The spelling of 505005559 in words is "five hundred five million, five thousand, five hundred fifty-nine".