12452621 has 2 divisors, whose sum is σ = 12452622. Its totient is φ = 12452620.

The previous prime is 12452537. The next prime is 12452623. The reversal of 12452621 is 12625421.

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., 12075625 + 376996 = 3475^2 + 614^2 .

It is a cyclic number.

It is not a de Polignac number, because 12452621 - 2¹⁰ = 12451597 is a prime.

Together with 12452623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12452623) 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, 6226310 + 6226311.

It is an arithmetic number, because the mean of its divisors is an integer number (6226311).

Almost surely, 2^12452621 is an apocalyptic number.

It is an amenable number.

12452621 is a deficient number, since it is larger than the sum of its proper divisors (1).

12452621 is an equidigital number, since it uses as much as digits as its factorization.

12452621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 23.

The square root of 12452621 is about 3528.8271422670. The cubic root of 12452621 is about 231.7858519848.

The spelling of 12452621 in words is "twelve million, four hundred fifty-two thousand, six hundred twenty-one".