505423417 has 2 divisors, whose sum is σ = 505423418. Its totient is φ = 505423416.

The previous prime is 505423403. The next prime is 505423433. The reversal of 505423417 is 714324505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 495463081 + 9960336 = 22259^2 + 3156^2 .

It is a cyclic number.

It is not a de Polignac number, because 505423417 - 2¹⁵ = 505390649 is a prime.

It is not a weakly prime, because it can be changed into another prime (505423487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252711708 + 252711709.

It is an arithmetic number, because the mean of its divisors is an integer number (252711709).

Almost surely, 2^505423417 is an apocalyptic number.

It is an amenable number.

505423417 is a deficient number, since it is larger than the sum of its proper divisors (1).

505423417 is an equidigital number, since it uses as much as digits as its factorization.

505423417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 505423417 is about 22481.6239849349. The cubic root of 505423417 is about 796.5599249117.

The spelling of 505423417 in words is "five hundred five million, four hundred twenty-three thousand, four hundred seventeen".