15135317 has 2 divisors, whose sum is σ = 15135318. Its totient is φ = 15135316.

The previous prime is 15135301. The next prime is 15135319. The reversal of 15135317 is 71353151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11771761 + 3363556 = 3431^2 + 1834^2 .

It is a cyclic number.

It is not a de Polignac number, because 15135317 - 2⁴ = 15135301 is a prime.

Together with 15135319, 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 (15135319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7567658 + 7567659.

It is an arithmetic number, because the mean of its divisors is an integer number (7567659).

Almost surely, 2^15135317 is an apocalyptic number.

It is an amenable number.

15135317 is a deficient number, since it is larger than the sum of its proper divisors (1).

15135317 is an equidigital number, since it uses as much as digits as its factorization.

15135317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1575, while the sum is 26.

The square root of 15135317 is about 3890.4134741696. The cubic root of 15135317 is about 247.3605894473.

Adding to 15135317 its reverse (71353151), we get a palindrome (86488468).

The spelling of 15135317 in words is "fifteen million, one hundred thirty-five thousand, three hundred seventeen".