12451997 has 2 divisors, whose sum is σ = 12451998. Its totient is φ = 12451996.

The previous prime is 12451963. The next prime is 12452023. The reversal of 12451997 is 79915421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12432676 + 19321 = 3526^2 + 139^2 .

It is a cyclic number.

It is not a de Polignac number, because 12451997 - 2¹⁰ = 12450973 is a prime.

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 12451997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12451097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6225998 + 6225999.

It is an arithmetic number, because the mean of its divisors is an integer number (6225999).

Almost surely, 2^12451997 is an apocalyptic number.

It is an amenable number.

12451997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12451997 is an equidigital number, since it uses as much as digits as its factorization.

12451997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 38.

The square root of 12451997 is about 3528.7387265141. The cubic root of 12451997 is about 231.7819803290.

The spelling of 12451997 in words is "twelve million, four hundred fifty-one thousand, nine hundred ninety-seven".