166153 has 4 divisors (see below), whose sum is σ = 178948. Its totient is φ = 153360.

The previous prime is 166151. The next prime is 166157. The reversal of 166153 is 351661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71289 + 94864 = 267^2 + 308^2 .

It is a cyclic number.

It is not a de Polignac number, because 166153 - 2¹ = 166151 is a prime.

It is a Duffinian number.

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 in 3 ways as a sum of consecutive naturals, for example, 6378 + ... + 6403.

It is an arithmetic number, because the mean of its divisors is an integer number (44737).

2¹⁶⁶¹⁵³ is an apocalyptic number.

166153 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

166153 is a deficient number, since it is larger than the sum of its proper divisors (12795).

166153 is a wasteful number, since it uses less digits than its factorization.

166153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12794.

The product of its digits is 540, while the sum is 22.

The square root of 166153 is about 407.6186943701. The cubic root of 166153 is about 54.9755263015.

The spelling of 166153 in words is "one hundred sixty-six thousand, one hundred fifty-three".