12544157 has 2 divisors, whose sum is σ = 12544158. Its totient is φ = 12544156.

The previous prime is 12544139. The next prime is 12544163. The reversal of 12544157 is 75144521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12538681 + 5476 = 3541^2 + 74^2 .

It is a cyclic number.

It is not a de Polignac number, because 12544157 - 2²⁰ = 11495581 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 (12544127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6272078 + 6272079.

It is an arithmetic number, because the mean of its divisors is an integer number (6272079).

Almost surely, 2^12544157 is an apocalyptic number.

It is an amenable number.

12544157 is a deficient number, since it is larger than the sum of its proper divisors (1).

12544157 is an equidigital number, since it uses as much as digits as its factorization.

12544157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5600, while the sum is 29.

The square root of 12544157 is about 3541.7731434975. The cubic root of 12544157 is about 232.3523987043.

Adding to 12544157 its reverse (75144521), we get a palindrome (87688678).

The spelling of 12544157 in words is "twelve million, five hundred forty-four thousand, one hundred fifty-seven".