505413317 has 2 divisors, whose sum is σ = 505413318. Its totient is φ = 505413316.

The previous prime is 505413299. The next prime is 505413331. The reversal of 505413317 is 713314505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 505395361 + 17956 = 22481^2 + 134^2 .

It is a cyclic number.

It is not a de Polignac number, because 505413317 - 2¹² = 505409221 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505413317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505413217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252706658 + 252706659.

It is an arithmetic number, because the mean of its divisors is an integer number (252706659).

Almost surely, 2^505413317 is an apocalyptic number.

It is an amenable number.

505413317 is a deficient number, since it is larger than the sum of its proper divisors (1).

505413317 is an equidigital number, since it uses as much as digits as its factorization.

505413317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 505413317 is about 22481.3993559120. The cubic root of 505413317 is about 796.5546189256.

The spelling of 505413317 in words is "five hundred five million, four hundred thirteen thousand, three hundred seventeen".