12517243 has 2 divisors, whose sum is σ = 12517244. Its totient is φ = 12517242.

The previous prime is 12517231. The next prime is 12517249. The reversal of 12517243 is 34271521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12517243 is a prime.

It is not a weakly prime, because it can be changed into another prime (12517249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6258621 + 6258622.

It is an arithmetic number, because the mean of its divisors is an integer number (6258622).

Almost surely, 2^12517243 is an apocalyptic number.

12517243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12517243 is an equidigital number, since it uses as much as digits as its factorization.

12517243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 25.

The square root of 12517243 is about 3537.9715940069. The cubic root of 12517243 is about 232.1861058717.

Adding to 12517243 its reverse (34271521), we get a palindrome (46788764).

The spelling of 12517243 in words is "twelve million, five hundred seventeen thousand, two hundred forty-three".