# 755

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

What does the number 755 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

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

## Prime factorization of 755:

### 5 × 151

See below for interesting mathematical facts about the number 755 from the Numbermatics database.

### Names of 755

• Cardinal: 755 can be written as Seven hundred fifty-five.

### Scientific notation

• Scientific notation: 7.55 × 102

### Factors of 755

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 156

### Divisors of 755

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 912
• Sum of proper divisors (its aliquot sum) s(n): 157
• 755 is a deficient number, because the sum of its proper divisors (157) is less than itself. Its deficiency is 598

### Bases of 755

• Binary: 10111100112
• Base-36: KZ

### Squares and roots of 755

• 755 squared (7552) is 570025
• 755 cubed (7553) is 430368875
• The square root of 755 is 27.4772633281
• The cube root of 755 is 9.1057484913

### Scales and comparisons

How big is 755?
• 755 seconds is equal to 12 minutes, 35 seconds.
• To count from 1 to 755 would take you about six 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 755 cubic inches would be around 0.8 feet tall.

### Recreational maths with 755

• 755 backwards is 557
• The number of decimal digits it has is: 3
• The sum of 755's digits is 17
• More coming soon!