12520271 has 2 divisors, whose sum is σ = 12520272. Its totient is φ = 12520270.

The previous prime is 12520247. The next prime is 12520289. The reversal of 12520271 is 17202521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12520271 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12520201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260135 + 6260136.

It is an arithmetic number, because the mean of its divisors is an integer number (6260136).

Almost surely, 2^12520271 is an apocalyptic number.

12520271 is a deficient number, since it is larger than the sum of its proper divisors (1).

12520271 is an equidigital number, since it uses as much as digits as its factorization.

12520271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 12520271 is about 3538.3994969477. The cubic root of 12520271 is about 232.2048267899.

Adding to 12520271 its reverse (17202521), we get a palindrome (29722792).

The spelling of 12520271 in words is "twelve million, five hundred twenty thousand, two hundred seventy-one".