12509197 has 2 divisors, whose sum is σ = 12509198. Its totient is φ = 12509196.

The previous prime is 12509183. The next prime is 12509221. The reversal of 12509197 is 79190521.

12509197 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., 7214596 + 5294601 = 2686^2 + 2301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12509197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12509117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6254598 + 6254599.

It is an arithmetic number, because the mean of its divisors is an integer number (6254599).

Almost surely, 2^12509197 is an apocalyptic number.

It is an amenable number.

12509197 is a deficient number, since it is larger than the sum of its proper divisors (1).

12509197 is an equidigital number, since it uses as much as digits as its factorization.

12509197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 12509197 is about 3536.8343189921. The cubic root of 12509197 is about 232.1363459836.

The spelling of 12509197 in words is "twelve million, five hundred nine thousand, one hundred ninety-seven".