166112571 has 12 divisors (see below), whose sum is σ = 223306152. Its totient is φ = 109837728.

The previous prime is 166112549. The next prime is 166112603. The reversal of 166112571 is 175211661.

It is not a de Polignac number, because 166112571 - 2⁹ = 166112059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166112171) 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 11 ways as a sum of consecutive naturals, for example, 46671 + ... + 50103.

It is an arithmetic number, because the mean of its divisors is an integer number (18608846).

Almost surely, 2^166112571 is an apocalyptic number.

166112571 is a deficient number, since it is larger than the sum of its proper divisors (57193581).

166112571 is an equidigital number, since it uses as much as digits as its factorization.

166112571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690 (or 3563 counting only the distinct ones).

The product of its digits is 2520, while the sum is 30.

The square root of 166112571 is about 12888.4665883882. The cubic root of 166112571 is about 549.7106698617.

The spelling of 166112571 in words is "one hundred sixty-six million, one hundred twelve thousand, five hundred seventy-one".