8520288317 has 2 divisors, whose sum is σ = 8520288318. Its totient is φ = 8520288316.

The previous prime is 8520288311. The next prime is 8520288319. The reversal of 8520288317 is 7138820258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7071800836 + 1448487481 = 84094^2 + 38059^2 .

It is a cyclic number.

It is not a de Polignac number, because 8520288317 - 2¹⁴ = 8520271933 is a prime.

Together with 8520288319, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8520288311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4260144158 + 4260144159.

It is an arithmetic number, because the mean of its divisors is an integer number (4260144159).

Almost surely, 2^8520288317 is an apocalyptic number.

It is an amenable number.

8520288317 is a deficient number, since it is larger than the sum of its proper divisors (1).

8520288317 is an equidigital number, since it uses as much as digits as its factorization.

8520288317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 8520288317 is about 92305.4078426611. The cubic root of 8520288317 is about 2042.4499845778.

The spelling of 8520288317 in words is "eight billion, five hundred twenty million, two hundred eighty-eight thousand, three hundred seventeen".