15398161 has 2 divisors, whose sum is σ = 15398162. Its totient is φ = 15398160.

The previous prime is 15398129. The next prime is 15398177. The reversal of 15398161 is 16189351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14017536 + 1380625 = 3744^2 + 1175^2 .

It is a cyclic number.

It is not a de Polignac number, because 15398161 - 2⁵ = 15398129 is a prime.

It is not a weakly prime, because it can be changed into another prime (15398261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7699080 + 7699081.

It is an arithmetic number, because the mean of its divisors is an integer number (7699081).

Almost surely, 2^15398161 is an apocalyptic number.

It is an amenable number.

15398161 is a deficient number, since it is larger than the sum of its proper divisors (1).

15398161 is an equidigital number, since it uses as much as digits as its factorization.

15398161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 34.

The square root of 15398161 is about 3924.0490567780. The cubic root of 15398161 is about 248.7842897773.

The spelling of 15398161 in words is "fifteen million, three hundred ninety-eight thousand, one hundred sixty-one".