# 171

## 171 is an odd composite number composed of two prime numbers multiplied together.

What does the number 171 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 6 divisors.

171 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of six divisors.

## Prime factorization of 171:

### 32 × 19

(3 × 3 × 19)

See below for interesting mathematical facts about the number 171 from the Numbermatics database.

### Names of 171

• Cardinal: 171 can be written as One hundred seventy-one.

### Scientific notation

• Scientific notation: 1.71 × 102

### Factors of 171

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 22

### Divisors of 171

• Number of divisors d(n): 6
• Complete list of divisors:
• Sum of all divisors σ(n): 260
• Sum of proper divisors (its aliquot sum) s(n): 89
• 171 is a deficient number, because the sum of its proper divisors (89) is less than itself. Its deficiency is 82

### Bases of 171

• Binary: 101010112
• Base-36: 4R

### Squares and roots of 171

• 171 squared (1712) is 29241
• 171 cubed (1713) is 5000211
• The square root of 171 is 13.0766968307
• The cube root of 171 is 5.5504991029

### Scales and comparisons

How big is 171?
• 171 seconds is equal to 2 minutes, 51 seconds.
• To count from 1 to 171 would take you about twenty-five seconds.

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 171 cubic inches would be around 0.5 feet tall.

### Recreational maths with 171

• 171 is the same when its digits are reversed! That makes it a palindromic number.
• 171 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 171's digits is 9
• More coming soon!