15317293 has 2 divisors, whose sum is σ = 15317294. Its totient is φ = 15317292.

The previous prime is 15317251. The next prime is 15317299. The reversal of 15317293 is 39271351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13235044 + 2082249 = 3638^2 + 1443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15317293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15317299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7658646 + 7658647.

It is an arithmetic number, because the mean of its divisors is an integer number (7658647).

Almost surely, 2^15317293 is an apocalyptic number.

It is an amenable number.

15317293 is a deficient number, since it is larger than the sum of its proper divisors (1).

15317293 is an equidigital number, since it uses as much as digits as its factorization.

15317293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 31.

The square root of 15317293 is about 3913.7313397830. The cubic root of 15317293 is about 248.3480036777.

The spelling of 15317293 in words is "fifteen million, three hundred seventeen thousand, two hundred ninety-three".