505136843 has 2 divisors, whose sum is σ = 505136844. Its totient is φ = 505136842.

The previous prime is 505136809. The next prime is 505136873. The reversal of 505136843 is 348631505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505136843 - 2¹⁴ = 505120459 is a prime.

It is not a weakly prime, because it can be changed into another prime (505136873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252568421 + 252568422.

It is an arithmetic number, because the mean of its divisors is an integer number (252568422).

Almost surely, 2^505136843 is an apocalyptic number.

505136843 is a deficient number, since it is larger than the sum of its proper divisors (1).

505136843 is an equidigital number, since it uses as much as digits as its factorization.

505136843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 505136843 is about 22475.2495647991. The cubic root of 505136843 is about 796.4093471892.

The spelling of 505136843 in words is "five hundred five million, one hundred thirty-six thousand, eight hundred forty-three".