166055071 has 24 divisors (see below), whose sum is σ = 210933744. Its totient is φ = 129548160.

The previous prime is 166055059. The next prime is 166055107. The reversal of 166055071 is 170550661.

It is not a de Polignac number, because 166055071 - 2¹³ = 166046879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166055051) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 44716 + ... + 48286.

It is an arithmetic number, because the mean of its divisors is an integer number (8788906).

Almost surely, 2^166055071 is an apocalyptic number.

166055071 is a deficient number, since it is larger than the sum of its proper divisors (44878673).

166055071 is a wasteful number, since it uses less digits than its factorization.

166055071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671 (or 3664 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 166055071 is about 12886.2357187815. The cubic root of 166055071 is about 549.6472349451.

The spelling of 166055071 in words is "one hundred sixty-six million, fifty-five thousand, seventy-one".