# 115

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

What does the number 115 look like?

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

115 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 115:

### 5 × 23

See below for interesting mathematical facts about the number 115 from the Numbermatics database.

### Names of 115

• Cardinal: 115 can be written as One hundred fifteen.

### Scientific notation

• Scientific notation: 1.15 × 102

### Factors of 115

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 28

### Divisors of 115

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 144
• Sum of proper divisors (its aliquot sum) s(n): 29
• 115 is a deficient number, because the sum of its proper divisors (29) is less than itself. Its deficiency is 86

### Bases of 115

• Binary: 11100112
• Base-36: 37

### Squares and roots of 115

• 115 squared (1152) is 13225
• 115 cubed (1153) is 1520875
• The square root of 115 is 10.7238052947
• The cube root of 115 is 4.8629441311

### Scales and comparisons

How big is 115?
• 115 seconds is equal to 1 minute, 55 seconds.
• To count from 1 to 115 would take you about fifty-seven 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 115 cubic inches would be around 0.4 feet tall.

### Recreational maths with 115

• 115 backwards is 511
• The number of decimal digits it has is: 3
• The sum of 115's digits is 7
• More coming soon!