12645451 has 16 divisors (see below), whose sum is σ = 15769600. Its totient is φ = 9872928.

The previous prime is 12645449. The next prime is 12645461. The reversal of 12645451 is 15454621.

12645451 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12645451 - 2¹ = 12645449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12645401) 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 in 15 ways as a sum of consecutive naturals, for example, 6310 + ... + 8068.

It is an arithmetic number, because the mean of its divisors is an integer number (985600).

Almost surely, 2^12645451 is an apocalyptic number.

12645451 is a deficient number, since it is larger than the sum of its proper divisors (3124149).

12645451 is a wasteful number, since it uses less digits than its factorization.

12645451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858.

The product of its digits is 4800, while the sum is 28.

The square root of 12645451 is about 3556.0442910628. The cubic root of 12645451 is about 232.9761375969.

The spelling of 12645451 in words is "twelve million, six hundred forty-five thousand, four hundred fifty-one".