15316513 has 2 divisors, whose sum is σ = 15316514. Its totient is φ = 15316512.

The previous prime is 15316453. The next prime is 15316517. The reversal of 15316513 is 31561351.

15316513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15303744 + 12769 = 3912^2 + 113^2 .

It is an emirp because it is prime and its reverse (31561351) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15316513 is a prime.

It is not a weakly prime, because it can be changed into another prime (15316517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7658256 + 7658257.

It is an arithmetic number, because the mean of its divisors is an integer number (7658257).

Almost surely, 2^15316513 is an apocalyptic number.

It is an amenable number.

15316513 is a deficient number, since it is larger than the sum of its proper divisors (1).

15316513 is an equidigital number, since it uses as much as digits as its factorization.

15316513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350, while the sum is 25.

The square root of 15316513 is about 3913.6316893648. The cubic root of 15316513 is about 248.3437880779.

Adding to 15316513 its reverse (31561351), we get a palindrome (46877864).

The spelling of 15316513 in words is "fifteen million, three hundred sixteen thousand, five hundred thirteen".