13257443 has 2 divisors, whose sum is σ = 13257444. Its totient is φ = 13257442.

The previous prime is 13257401. The next prime is 13257451. The reversal of 13257443 is 34475231.

It is a happy number.

13257443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13257443 - 2⁸ = 13257187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13257493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6628721 + 6628722.

It is an arithmetic number, because the mean of its divisors is an integer number (6628722).

Almost surely, 2^13257443 is an apocalyptic number.

13257443 is a deficient number, since it is larger than the sum of its proper divisors (1).

13257443 is an equidigital number, since it uses as much as digits as its factorization.

13257443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 29.

The square root of 13257443 is about 3641.0771757819. The cubic root of 13257443 is about 236.6754743355.

It can be divided in two parts, 132 and 57443, that added together give a palindrome (57575).

The spelling of 13257443 in words is "thirteen million, two hundred fifty-seven thousand, four hundred forty-three".