12556241 has 2 divisors, whose sum is σ = 12556242. Its totient is φ = 12556240.

The previous prime is 12556237. The next prime is 12556253. The reversal of 12556241 is 14265521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12453841 + 102400 = 3529^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 12556241 - 2² = 12556237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12556241.

It is not a weakly prime, because it can be changed into another prime (12556211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6278120 + 6278121.

It is an arithmetic number, because the mean of its divisors is an integer number (6278121).

Almost surely, 2^12556241 is an apocalyptic number.

It is an amenable number.

12556241 is a deficient number, since it is larger than the sum of its proper divisors (1).

12556241 is an equidigital number, since it uses as much as digits as its factorization.

12556241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 26.

The square root of 12556241 is about 3543.4786580421. The cubic root of 12556241 is about 232.4269844334.

The spelling of 12556241 in words is "twelve million, five hundred fifty-six thousand, two hundred forty-one".