12556197 has 12 divisors (see below), whose sum is σ = 18167500. Its totient is φ = 8356608.

The previous prime is 12556163. The next prime is 12556199. The reversal of 12556197 is 79165521.

12556197 is a `hidden beast` number, since 1 + 2 + 5 + 561 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2405601 + 10150596 = 1551^2 + 3186^2 .

It is not a de Polignac number, because 12556197 - 2¹⁵ = 12523429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12556199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9429 + ... + 10677.

Almost surely, 2^12556197 is an apocalyptic number.

It is an amenable number.

12556197 is a deficient number, since it is larger than the sum of its proper divisors (5611303).

12556197 is a wasteful number, since it uses less digits than its factorization.

12556197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372 (or 2369 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 12556197 is about 3543.4724494484. The cubic root of 12556197 is about 232.4267129402.

The spelling of 12556197 in words is "twelve million, five hundred fifty-six thousand, one hundred ninety-seven".