15317087 has 2 divisors, whose sum is σ = 15317088. Its totient is φ = 15317086.

The previous prime is 15317063. The next prime is 15317117. The reversal of 15317087 is 78071351.

It is a weak prime.

It is an emirp because it is prime and its reverse (78071351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15317087 - 2¹⁸ = 15054943 is a prime.

It is a super-2 number, since 2×15317087² = 469226308331138, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15317047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7658543 + 7658544.

It is an arithmetic number, because the mean of its divisors is an integer number (7658544).

Almost surely, 2^15317087 is an apocalyptic number.

15317087 is a deficient number, since it is larger than the sum of its proper divisors (1).

15317087 is an equidigital number, since it uses as much as digits as its factorization.

15317087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 15317087 is about 3913.7050220986. The cubic root of 15317087 is about 248.3468903409.

The spelling of 15317087 in words is "fifteen million, three hundred seventeen thousand, eighty-seven".