12671251 has 4 divisors (see below), whose sum is σ = 12678552. Its totient is φ = 12663952.

The previous prime is 12671249. The next prime is 12671287. The reversal of 12671251 is 15217621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 15217621 = 31 ⋅490891.

It is a cyclic number.

It is not a de Polignac number, because 12671251 - 2¹ = 12671249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12671201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615 + ... + 5071.

It is an arithmetic number, because the mean of its divisors is an integer number (3169638).

Almost surely, 2^12671251 is an apocalyptic number.

12671251 is a deficient number, since it is larger than the sum of its proper divisors (7301).

12671251 is an equidigital number, since it uses as much as digits as its factorization.

12671251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7300.

The product of its digits is 840, while the sum is 25.

The square root of 12671251 is about 3559.6700689811. The cubic root of 12671251 is about 233.1344738799.

Adding to 12671251 its reverse (15217621), we get a palindrome (27888872).

The spelling of 12671251 in words is "twelve million, six hundred seventy-one thousand, two hundred fifty-one".