12648451 has 2 divisors, whose sum is σ = 12648452. Its totient is φ = 12648450.

The previous prime is 12648439. The next prime is 12648473. The reversal of 12648451 is 15484621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12648451 - 2¹⁹ = 12124163 is a prime.

It is not a weakly prime, because it can be changed into another prime (12648401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6324225 + 6324226.

It is an arithmetic number, because the mean of its divisors is an integer number (6324226).

Almost surely, 2^12648451 is an apocalyptic number.

12648451 is the 1591-st centered decagonal number.

12648451 is a deficient number, since it is larger than the sum of its proper divisors (1).

12648451 is an equidigital number, since it uses as much as digits as its factorization.

12648451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 31.

The square root of 12648451 is about 3556.4660830662. The cubic root of 12648451 is about 232.9945598514.

The spelling of 12648451 in words is "twelve million, six hundred forty-eight thousand, four hundred fifty-one".