12445091 has 2 divisors, whose sum is σ = 12445092. Its totient is φ = 12445090.

The previous prime is 12445079. The next prime is 12445109. The reversal of 12445091 is 19054421.

Together with next prime (12445109) 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 12445091 - 2²² = 8250787 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12445091.

It is not a weakly prime, because it can be changed into another prime (12445021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6222545 + 6222546.

It is an arithmetic number, because the mean of its divisors is an integer number (6222546).

Almost surely, 2^12445091 is an apocalyptic number.

12445091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12445091 is an equidigital number, since it uses as much as digits as its factorization.

12445091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 12445091 is about 3527.7600541987. The cubic root of 12445091 is about 231.7391228831.

The spelling of 12445091 in words is "twelve million, four hundred forty-five thousand, ninety-one".