166156 has 6 divisors (see below), whose sum is σ = 290780. Its totient is φ = 83076.

The previous prime is 166151. The next prime is 166157. The reversal of 166156 is 651661.

It is a self number, because there is not a number n which added to its sum of digits gives 166156.

It is not an unprimeable number, because it can be changed into a prime (166151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20766 + ... + 20773.

2¹⁶⁶¹⁵⁶ is an apocalyptic number.

It is an amenable number.

166156 is a deficient number, since it is larger than the sum of its proper divisors (124624).

166156 is a wasteful number, since it uses less digits than its factorization.

166156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41543 (or 41541 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 166156 is about 407.6223742632. The cubic root of 166156 is about 54.9758571724.

The spelling of 166156 in words is "one hundred sixty-six thousand, one hundred fifty-six".