166443055 has 16 divisors (see below), whose sum is σ = 204773184. Its totient is φ = 129825280.

The previous prime is 166443047. The next prime is 166443077. The reversal of 166443055 is 550344661.

It is not a de Polignac number, because 166443055 - 2³ = 166443047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166443055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42375 + ... + 46135.

It is an arithmetic number, because the mean of its divisors is an integer number (12798324).

Almost surely, 2^166443055 is an apocalyptic number.

166443055 is a deficient number, since it is larger than the sum of its proper divisors (38330129).

166443055 is a wasteful number, since it uses less digits than its factorization.

166443055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 166443055 is about 12901.2811379336. The cubic root of 166443055 is about 550.0749815128.

The spelling of 166443055 in words is "one hundred sixty-six million, four hundred forty-three thousand, fifty-five".