12944557 has 2 divisors, whose sum is σ = 12944558. Its totient is φ = 12944556.

The previous prime is 12944551. The next prime is 12944563. The reversal of 12944557 is 75544921.

12944557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (12944551) and next prime (12944563).

It can be written as a sum of positive squares in only one way, i.e., 9126441 + 3818116 = 3021^2 + 1954^2 .

It is a cyclic number.

It is not a de Polignac number, because 12944557 - 2¹¹ = 12942509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12944551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6472278 + 6472279.

It is an arithmetic number, because the mean of its divisors is an integer number (6472279).

Almost surely, 2^12944557 is an apocalyptic number.

It is an amenable number.

12944557 is a deficient number, since it is larger than the sum of its proper divisors (1).

12944557 is an equidigital number, since it uses as much as digits as its factorization.

12944557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

The square root of 12944557 is about 3597.8544995594. The cubic root of 12944557 is about 234.7987230838.

The spelling of 12944557 in words is "twelve million, nine hundred forty-four thousand, five hundred fifty-seven".