505705019 has 2 divisors, whose sum is σ = 505705020. Its totient is φ = 505705018.

The previous prime is 505704977. The next prime is 505705027. The reversal of 505705019 is 910507505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505705019 - 2²⁸ = 237269563 is a prime.

It is a super-2 number, since 2×505705019² = 511475132483580722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (505705619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252852509 + 252852510.

It is an arithmetic number, because the mean of its divisors is an integer number (252852510).

Almost surely, 2^505705019 is an apocalyptic number.

505705019 is a deficient number, since it is larger than the sum of its proper divisors (1).

505705019 is an equidigital number, since it uses as much as digits as its factorization.

505705019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7875, while the sum is 32.

The square root of 505705019 is about 22487.8860500493. The cubic root of 505705019 is about 796.7078347063.

The spelling of 505705019 in words is "five hundred five million, seven hundred five thousand, nineteen".