12559091 has 2 divisors, whose sum is σ = 12559092. Its totient is φ = 12559090.

The previous prime is 12559087. The next prime is 12559093. The reversal of 12559091 is 19095521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12559091 - 2² = 12559087 is a prime.

Together with 12559093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12559093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6279545 + 6279546.

It is an arithmetic number, because the mean of its divisors is an integer number (6279546).

Almost surely, 2^12559091 is an apocalyptic number.

12559091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12559091 is an equidigital number, since it uses as much as digits as its factorization.

12559091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 12559091 is about 3543.8807824192. The cubic root of 12559091 is about 232.4445684325. Note that the first 3 decimals are identical.

The spelling of 12559091 in words is "twelve million, five hundred fifty-nine thousand, ninety-one".