12443261 has 2 divisors, whose sum is σ = 12443262. Its totient is φ = 12443260.

The previous prime is 12443251. The next prime is 12443267. The reversal of 12443261 is 16234421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12208036 + 235225 = 3494^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 12443261 - 2¹⁰ = 12442237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12443267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221630 + 6221631.

It is an arithmetic number, because the mean of its divisors is an integer number (6221631).

Almost surely, 2^12443261 is an apocalyptic number.

It is an amenable number.

12443261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12443261 is an equidigital number, since it uses as much as digits as its factorization.

12443261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 12443261 is about 3527.5006732813. The cubic root of 12443261 is about 231.7277635612.

Adding to 12443261 its reverse (16234421), we get a palindrome (28677682).

The spelling of 12443261 in words is "twelve million, four hundred forty-three thousand, two hundred sixty-one".