12166547 has 2 divisors, whose sum is σ = 12166548. Its totient is φ = 12166546.

The previous prime is 12166537. The next prime is 12166579. The reversal of 12166547 is 74566121.

12166547 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (12166579) can be obtained adding 12166547 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12166547 is a prime.

It is not a weakly prime, because it can be changed into another prime (12166537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6083273 + 6083274.

It is an arithmetic number, because the mean of its divisors is an integer number (6083274).

Almost surely, 2^12166547 is an apocalyptic number.

12166547 is a deficient number, since it is larger than the sum of its proper divisors (1).

12166547 is an equidigital number, since it uses as much as digits as its factorization.

12166547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The square root of 12166547 is about 3488.0577690170. The cubic root of 12166547 is about 229.9971455222.

The spelling of 12166547 in words is "twelve million, one hundred sixty-six thousand, five hundred forty-seven".