12497621 has 2 divisors, whose sum is σ = 12497622. Its totient is φ = 12497620.

The previous prime is 12497603. The next prime is 12497623. The reversal of 12497621 is 12679421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11662225 + 835396 = 3415^2 + 914^2 .

It is a cyclic number.

It is not a de Polignac number, because 12497621 - 2¹⁴ = 12481237 is a prime.

Together with 12497623, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₈₁₈₅₆₄ and since 12497621 and 818564 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12497623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6248810 + 6248811.

It is an arithmetic number, because the mean of its divisors is an integer number (6248811).

Almost surely, 2^12497621 is an apocalyptic number.

It is an amenable number.

12497621 is a deficient number, since it is larger than the sum of its proper divisors (1).

12497621 is an equidigital number, since it uses as much as digits as its factorization.

12497621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 12497621 is about 3535.1974485168. The cubic root of 12497621 is about 232.0647176267.

The spelling of 12497621 in words is "twelve million, four hundred ninety-seven thousand, six hundred twenty-one".