# 1155

## 1,155 is an odd composite number composed of four prime numbers multiplied together.

What does the number 1155 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

1155 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

## Prime factorization of 1155:

### 3 × 5 × 7 × 11

See below for interesting mathematical facts about the number 1155 from the Numbermatics database.

Quick links:

### Names of 1155

• Cardinal: 1155 can be written as One thousand, one hundred fifty-five.

### Scientific notation

• Scientific notation: 1.155 × 103

### Factors of 1155

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 26

### Divisors of 1155

• Number of divisors d(n): 16
• Complete list of divisors:
• Sum of all divisors σ(n): 2304
• Sum of proper divisors (its aliquot sum) s(n): 1149
• 1155 is a deficient number, because the sum of its proper divisors (1149) is less than itself. Its deficiency is 6

### Bases of 1155

• Binary: 100100000112
• Hexadecimal: 0x483
• Base-36: W3

### Squares and roots of 1155

• 1155 squared (11552) is 1334025
• 1155 cubed (11553) is 1540798875
• The square root of 1155 is 33.9852909359
• The cube root of 1155 is 10.4920574857

### Scales and comparisons

How big is 1155?
• 1,155 seconds is equal to 19 minutes, 15 seconds.
• To count from 1 to 1,155 would take you about nineteen minutes.

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 1155 cubic inches would be around 0.9 feet tall.

### Recreational maths with 1155

• 1155 backwards is 5511
• The number of decimal digits it has is: 4
• The sum of 1155's digits is 12
• More coming soon!

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"Number 1155 - Facts about the integer". Numbermatics.com. 2019. Web. 23 August 2019.

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The information we have on file for 1155 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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