15085913 has 2 divisors, whose sum is σ = 15085914. Its totient is φ = 15085912.

The previous prime is 15085891. The next prime is 15085937. The reversal of 15085913 is 31958051.

15085913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11744329 + 3341584 = 3427^2 + 1828^2 .

It is a cyclic number.

It is not a de Polignac number, because 15085913 - 2⁸ = 15085657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15085913.

It is not a weakly prime, because it can be changed into another prime (15085013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7542956 + 7542957.

It is an arithmetic number, because the mean of its divisors is an integer number (7542957).

Almost surely, 2^15085913 is an apocalyptic number.

It is an amenable number.

15085913 is a deficient number, since it is larger than the sum of its proper divisors (1).

15085913 is an equidigital number, since it uses as much as digits as its factorization.

15085913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 15085913 is about 3884.0588306564. The cubic root of 15085913 is about 247.0911550869.

The spelling of 15085913 in words is "fifteen million, eighty-five thousand, nine hundred thirteen".