12645171 has 48 divisors (see below), whose sum is σ = 23182848. Its totient is φ = 6451200.

The previous prime is 12645169. The next prime is 12645173. The reversal of 12645171 is 17154621.

It is a happy number.

12645171 is a `hidden beast` number, since 1 + 2 + 645 + 17 + 1 = 666.

12645171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12645169) and next prime (12645173).

It is not a de Polignac number, because 12645171 - 2¹ = 12645169 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (12645173) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49075 + ... + 49331.

It is an arithmetic number, because the mean of its divisors is an integer number (482976).

Almost surely, 2^12645171 is an apocalyptic number.

12645171 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12645171 is a deficient number, since it is larger than the sum of its proper divisors (10537677).

12645171 is a wasteful number, since it uses less digits than its factorization.

12645171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 349 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 12645171 is about 3556.0049212564. The cubic root of 12645171 is about 232.9744180378.

Adding to 12645171 its reverse (17154621), we get a palindrome (29799792).

The spelling of 12645171 in words is "twelve million, six hundred forty-five thousand, one hundred seventy-one".