12445117 has 2 divisors, whose sum is σ = 12445118. Its totient is φ = 12445116.

The previous prime is 12445109. The next prime is 12445123. The reversal of 12445117 is 71154421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9865881 + 2579236 = 3141^2 + 1606^2 .

It is a cyclic number.

It is not a de Polignac number, because 12445117 - 2³ = 12445109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12445091 and 12445100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12445157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6222558 + 6222559.

It is an arithmetic number, because the mean of its divisors is an integer number (6222559).

Almost surely, 2^12445117 is an apocalyptic number.

It is an amenable number.

12445117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12445117 is an equidigital number, since it uses as much as digits as its factorization.

12445117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1120, while the sum is 25.

The square root of 12445117 is about 3527.7637392547. The cubic root of 12445117 is about 231.7392842643.

Adding to 12445117 its reverse (71154421), we get a palindrome (83599538).

The spelling of 12445117 in words is "twelve million, four hundred forty-five thousand, one hundred seventeen".