15328091 has 2 divisors, whose sum is σ = 15328092. Its totient is φ = 15328090.

The previous prime is 15328087. The next prime is 15328109. The reversal of 15328091 is 19082351.

Together with next prime (15328109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15328091 - 2² = 15328087 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (15324091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7664045 + 7664046.

It is an arithmetic number, because the mean of its divisors is an integer number (7664046).

Almost surely, 2^15328091 is an apocalyptic number.

15328091 is a deficient number, since it is larger than the sum of its proper divisors (1).

15328091 is an equidigital number, since it uses as much as digits as its factorization.

15328091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 15328091 is about 3915.1105986932. The cubic root of 15328091 is about 248.4063480131.

The spelling of 15328091 in words is "fifteen million, three hundred twenty-eight thousand, ninety-one".