12252391 has 2 divisors, whose sum is σ = 12252392. Its totient is φ = 12252390.

The previous prime is 12252389. The next prime is 12252403. The reversal of 12252391 is 19325221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12252391 - 2¹ = 12252389 is a prime.

Together with 12252389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12252301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6126195 + 6126196.

It is an arithmetic number, because the mean of its divisors is an integer number (6126196).

Almost surely, 2^12252391 is an apocalyptic number.

12252391 is a deficient number, since it is larger than the sum of its proper divisors (1).

12252391 is an equidigital number, since it uses as much as digits as its factorization.

12252391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 12252391 is about 3500.3415547629. The cubic root of 12252391 is about 230.5368116588.

The spelling of 12252391 in words is "twelve million, two hundred fifty-two thousand, three hundred ninety-one".