166112549 has 2 divisors, whose sum is σ = 166112550. Its totient is φ = 166112548.

The previous prime is 166112503. The next prime is 166112603. The reversal of 166112549 is 945211661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154504900 + 11607649 = 12430^2 + 3407^2 .

It is a cyclic number.

It is not a de Polignac number, because 166112549 - 2⁸ = 166112293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166115549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83056274 + 83056275.

It is an arithmetic number, because the mean of its divisors is an integer number (83056275).

Almost surely, 2^166112549 is an apocalyptic number.

It is an amenable number.

166112549 is a deficient number, since it is larger than the sum of its proper divisors (1).

166112549 is an equidigital number, since it uses as much as digits as its factorization.

166112549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The square root of 166112549 is about 12888.4657349120. The cubic root of 166112549 is about 549.7106455938.

It can be divided in two parts, 166112 and 549, that added together give a palindrome (166661).

The spelling of 166112549 in words is "one hundred sixty-six million, one hundred twelve thousand, five hundred forty-nine".