12257417 has 2 divisors, whose sum is σ = 12257418. Its totient is φ = 12257416.

The previous prime is 12257411. The next prime is 12257419. The reversal of 12257417 is 71475221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6635776 + 5621641 = 2576^2 + 2371^2 .

It is an emirp because it is prime and its reverse (71475221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12257417 - 2¹² = 12253321 is a prime.

Together with 12257419, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12257417.

It is not a weakly prime, because it can be changed into another prime (12257411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6128708 + 6128709.

It is an arithmetic number, because the mean of its divisors is an integer number (6128709).

Almost surely, 2^12257417 is an apocalyptic number.

It is an amenable number.

12257417 is a deficient number, since it is larger than the sum of its proper divisors (1).

12257417 is an equidigital number, since it uses as much as digits as its factorization.

12257417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3920, while the sum is 29.

The square root of 12257417 is about 3501.0594110926. The cubic root of 12257417 is about 230.5683298503.

The spelling of 12257417 in words is "twelve million, two hundred fifty-seven thousand, four hundred seventeen".