12162257 has 2 divisors, whose sum is σ = 12162258. Its totient is φ = 12162256.

The previous prime is 12162253. The next prime is 12162263. The reversal of 12162257 is 75226121.

12162257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9096256 + 3066001 = 3016^2 + 1751^2 .

It is a cyclic number.

It is not a de Polignac number, because 12162257 - 2² = 12162253 is a prime.

It is not a weakly prime, because it can be changed into another prime (12162253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6081128 + 6081129.

It is an arithmetic number, because the mean of its divisors is an integer number (6081129).

Almost surely, 2^12162257 is an apocalyptic number.

It is an amenable number.

12162257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12162257 is an equidigital number, since it uses as much as digits as its factorization.

12162257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 26.

The square root of 12162257 is about 3487.4427593869. The cubic root of 12162257 is about 229.9701095372.

Adding to 12162257 its reverse (75226121), we get a palindrome (87388378).

The spelling of 12162257 in words is "twelve million, one hundred sixty-two thousand, two hundred fifty-seven".