12544091 has 4 divisors (see below), whose sum is σ = 14336112. Its totient is φ = 10752072.

The previous prime is 12544033. The next prime is 12544097. The reversal of 12544091 is 19044521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12544091 - 2⁶ = 12544027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12544091.

It is not an unprimeable number, because it can be changed into a prime (12544097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896000 + ... + 896013.

It is an arithmetic number, because the mean of its divisors is an integer number (3584028).

Almost surely, 2^12544091 is an apocalyptic number.

12544091 is a deficient number, since it is larger than the sum of its proper divisors (1792021).

12544091 is an equidigital number, since it uses as much as digits as its factorization.

12544091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792020.

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

The square root of 12544091 is about 3541.7638261183. The cubic root of 12544091 is about 232.3519912029.

The spelling of 12544091 in words is "twelve million, five hundred forty-four thousand, ninety-one".