12547417 has 2 divisors, whose sum is σ = 12547418. Its totient is φ = 12547416.

The previous prime is 12547399. The next prime is 12547421. The reversal of 12547417 is 71474521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11806096 + 741321 = 3436^2 + 861^2 .

It is a cyclic number.

It is not a de Polignac number, because 12547417 - 2⁷ = 12547289 is a prime.

It is not a weakly prime, because it can be changed into another prime (12547427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6273708 + 6273709.

It is an arithmetic number, because the mean of its divisors is an integer number (6273709).

Almost surely, 2^12547417 is an apocalyptic number.

It is an amenable number.

12547417 is a deficient number, since it is larger than the sum of its proper divisors (1).

12547417 is an equidigital number, since it uses as much as digits as its factorization.

12547417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 31.

The square root of 12547417 is about 3542.2333350585. The cubic root of 12547417 is about 232.3725250259.

The spelling of 12547417 in words is "twelve million, five hundred forty-seven thousand, four hundred seventeen".