12291451 has 2 divisors, whose sum is σ = 12291452. Its totient is φ = 12291450.

The previous prime is 12291443. The next prime is 12291463. The reversal of 12291451 is 15419221.

It is a happy number.

12291451 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12291451 - 2³ = 12291443 is a prime.

It is not a weakly prime, because it can be changed into another prime (12291491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6145725 + 6145726.

It is an arithmetic number, because the mean of its divisors is an integer number (6145726).

Almost surely, 2^12291451 is an apocalyptic number.

12291451 is a deficient number, since it is larger than the sum of its proper divisors (1).

12291451 is an equidigital number, since it uses as much as digits as its factorization.

12291451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 25.

The square root of 12291451 is about 3505.9165705989. The cubic root of 12291451 is about 230.7815316719.

The spelling of 12291451 in words is "twelve million, two hundred ninety-one thousand, four hundred fifty-one".