12182257 has 2 divisors, whose sum is σ = 12182258. Its totient is φ = 12182256.

The previous prime is 12182243. The next prime is 12182279. The reversal of 12182257 is 75228121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10751841 + 1430416 = 3279^2 + 1196^2 .

It is a cyclic number.

It is not a de Polignac number, because 12182257 - 2¹¹ = 12180209 is a prime.

It is a super-2 number, since 2×12182257² = 296814771228098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12182957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6091128 + 6091129.

It is an arithmetic number, because the mean of its divisors is an integer number (6091129).

Almost surely, 2^12182257 is an apocalyptic number.

It is an amenable number.

12182257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12182257 is an equidigital number, since it uses as much as digits as its factorization.

12182257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 28.

The square root of 12182257 is about 3490.3090121077. The cubic root of 12182257 is about 230.0960972098.

The spelling of 12182257 in words is "twelve million, one hundred eighty-two thousand, two hundred fifty-seven".