504995917 has 2 divisors, whose sum is σ = 504995918. Its totient is φ = 504995916.

The previous prime is 504995903. The next prime is 504995941. The reversal of 504995917 is 719599405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499701316 + 5294601 = 22354^2 + 2301^2 .

It is a cyclic number.

It is not a de Polignac number, because 504995917 - 2¹¹ = 504993869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (504995947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252497958 + 252497959.

It is an arithmetic number, because the mean of its divisors is an integer number (252497959).

Almost surely, 2^504995917 is an apocalyptic number.

It is an amenable number.

504995917 is a deficient number, since it is larger than the sum of its proper divisors (1).

504995917 is an equidigital number, since it uses as much as digits as its factorization.

504995917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 510300, while the sum is 49.

The square root of 504995917 is about 22472.1142085029. The cubic root of 504995917 is about 796.3352780044.

The spelling of 504995917 in words is "five hundred four million, nine hundred ninety-five thousand, nine hundred seventeen".