166528171 has 2 divisors, whose sum is σ = 166528172. Its totient is φ = 166528170.

The previous prime is 166528169. The next prime is 166528199. The reversal of 166528171 is 171825661.

166528171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166528171 - 2¹ = 166528169 is a prime.

Together with 166528169, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 166528171.

It is not a weakly prime, because it can be changed into another prime (166528771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83264085 + 83264086.

It is an arithmetic number, because the mean of its divisors is an integer number (83264086).

Almost surely, 2^166528171 is an apocalyptic number.

166528171 is a deficient number, since it is larger than the sum of its proper divisors (1).

166528171 is an equidigital number, since it uses as much as digits as its factorization.

166528171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 37.

The square root of 166528171 is about 12904.5794584713. The cubic root of 166528171 is about 550.1687317014.

The spelling of 166528171 in words is "one hundred sixty-six million, five hundred twenty-eight thousand, one hundred seventy-one".