505240542559 has 2 divisors, whose sum is σ = 505240542560. Its totient is φ = 505240542558.

The previous prime is 505240542523. The next prime is 505240542617. The reversal of 505240542559 is 955245042505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505240542559 - 2⁷ = 505240542431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505240542259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252620271279 + 252620271280.

It is an arithmetic number, because the mean of its divisors is an integer number (252620271280).

Almost surely, 2^505240542559 is an apocalyptic number.

505240542559 is a deficient number, since it is larger than the sum of its proper divisors (1).

505240542559 is an equidigital number, since it uses as much as digits as its factorization.

505240542559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800000, while the sum is 46.

The spelling of 505240542559 in words is "five hundred five billion, two hundred forty million, five hundred forty-two thousand, five hundred fifty-nine".