15243091 has 2 divisors, whose sum is σ = 15243092. Its totient is φ = 15243090.

The previous prime is 15243083. The next prime is 15243097. The reversal of 15243091 is 19034251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15243091 - 2³ = 15243083 is a prime.

It is not a weakly prime, because it can be changed into another prime (15243097) 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, 7621545 + 7621546.

It is an arithmetic number, because the mean of its divisors is an integer number (7621546).

Almost surely, 2^15243091 is an apocalyptic number.

15243091 is a deficient number, since it is larger than the sum of its proper divisors (1).

15243091 is an equidigital number, since it uses as much as digits as its factorization.

15243091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 15243091 is about 3904.2401309346. The cubic root of 15243091 is about 247.9463279186.

The spelling of 15243091 in words is "fifteen million, two hundred forty-three thousand, ninety-one".