12545171 has 2 divisors, whose sum is σ = 12545172. Its totient is φ = 12545170.

The previous prime is 12545129. The next prime is 12545177. The reversal of 12545171 is 17154521.

It is a strong prime.

It is an emirp because it is prime and its reverse (17154521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12545171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12545171.

It is not a weakly prime, because it can be changed into another prime (12545177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6272585 + 6272586.

It is an arithmetic number, because the mean of its divisors is an integer number (6272586).

Almost surely, 2^12545171 is an apocalyptic number.

12545171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12545171 is an equidigital number, since it uses as much as digits as its factorization.

12545171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1400, while the sum is 26.

The square root of 12545171 is about 3541.9162892423. The cubic root of 12545171 is about 232.3586592282.

Adding to 12545171 its reverse (17154521), we get a palindrome (29699692).

The spelling of 12545171 in words is "twelve million, five hundred forty-five thousand, one hundred seventy-one".