520415417 has 2 divisors, whose sum is σ = 520415418. Its totient is φ = 520415416.

The previous prime is 520415351. The next prime is 520415513. The reversal of 520415417 is 714514025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 514563856 + 5851561 = 22684^2 + 2419^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520415417 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 520415417.

It is not a weakly prime, because it can be changed into another prime (520415017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260207708 + 260207709.

It is an arithmetic number, because the mean of its divisors is an integer number (260207709).

Almost surely, 2^520415417 is an apocalyptic number.

It is an amenable number.

520415417 is a deficient number, since it is larger than the sum of its proper divisors (1).

520415417 is an equidigital number, since it uses as much as digits as its factorization.

520415417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 520415417 is about 22812.6153038182. The cubic root of 520415417 is about 804.3592329033.

The spelling of 520415417 in words is "five hundred twenty million, four hundred fifteen thousand, four hundred seventeen".