166267249 has 2 divisors, whose sum is σ = 166267250. Its totient is φ = 166267248.

The previous prime is 166267223. The next prime is 166267289. The reversal of 166267249 is 942762661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147501025 + 18766224 = 12145^2 + 4332^2 .

It is a cyclic number.

It is not a de Polignac number, because 166267249 - 2¹¹ = 166265201 is a prime.

It is not a weakly prime, because it can be changed into another prime (166267289) 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, 83133624 + 83133625.

It is an arithmetic number, because the mean of its divisors is an integer number (83133625).

Almost surely, 2^166267249 is an apocalyptic number.

It is an amenable number.

166267249 is a deficient number, since it is larger than the sum of its proper divisors (1).

166267249 is an equidigital number, since it uses as much as digits as its factorization.

166267249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 166267249 is about 12894.4658284087. The cubic root of 166267249 is about 549.8812404742.

The spelling of 166267249 in words is "one hundred sixty-six million, two hundred sixty-seven thousand, two hundred forty-nine".