505536917 has 2 divisors, whose sum is σ = 505536918. Its totient is φ = 505536916.

The previous prime is 505536907. The next prime is 505536923. The reversal of 505536917 is 719635505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 491331556 + 14205361 = 22166^2 + 3769^2 .

It is a cyclic number.

It is not a de Polignac number, because 505536917 - 2⁴ = 505536901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505536907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252768458 + 252768459.

It is an arithmetic number, because the mean of its divisors is an integer number (252768459).

Almost surely, 2^505536917 is an apocalyptic number.

It is an amenable number.

505536917 is a deficient number, since it is larger than the sum of its proper divisors (1).

505536917 is an equidigital number, since it uses as much as digits as its factorization.

505536917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141750, while the sum is 41.

The square root of 505536917 is about 22484.1481270694. The cubic root of 505536917 is about 796.6195467269.

The spelling of 505536917 in words is "five hundred five million, five hundred thirty-six thousand, nine hundred seventeen".