15317801 has 2 divisors, whose sum is σ = 15317802. Its totient is φ = 15317800.

The previous prime is 15317791. The next prime is 15317807. The reversal of 15317801 is 10871351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15202201 + 115600 = 3899^2 + 340^2 .

It is an emirp because it is prime and its reverse (10871351) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15317801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15317807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7658900 + 7658901.

It is an arithmetic number, because the mean of its divisors is an integer number (7658901).

Almost surely, 2^15317801 is an apocalyptic number.

It is an amenable number.

15317801 is a deficient number, since it is larger than the sum of its proper divisors (1).

15317801 is an equidigital number, since it uses as much as digits as its factorization.

15317801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 15317801 is about 3913.7962389476. The cubic root of 15317801 is about 248.3507491452.

The spelling of 15317801 in words is "fifteen million, three hundred seventeen thousand, eight hundred one".