12197257 has 2 divisors, whose sum is σ = 12197258. Its totient is φ = 12197256.

The previous prime is 12197243. The next prime is 12197281. The reversal of 12197257 is 75279121.

12197257 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., 6702921 + 5494336 = 2589^2 + 2344^2 .

It is a cyclic number.

It is not a de Polignac number, because 12197257 - 2¹⁵ = 12164489 is a prime.

It is not a weakly prime, because it can be changed into another prime (12197557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6098628 + 6098629.

It is an arithmetic number, because the mean of its divisors is an integer number (6098629).

Almost surely, 2^12197257 is an apocalyptic number.

It is an amenable number.

12197257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12197257 is an equidigital number, since it uses as much as digits as its factorization.

12197257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 34.

The square root of 12197257 is about 3492.4571579334. The cubic root of 12197257 is about 230.1904975014.

The spelling of 12197257 in words is "twelve million, one hundred ninety-seven thousand, two hundred fifty-seven".