# 455

## 455 is an odd composite number composed of three prime numbers multiplied together.

What does the number 455 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

455 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 455:

### 5 × 7 × 13

See below for interesting mathematical facts about the number 455 from the Numbermatics database.

### Names of 455

• Cardinal: 455 can be written as Four hundred fifty-five.

### Scientific notation

• Scientific notation: 4.55 × 102

### Factors of 455

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 25

### Divisors of 455

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 672
• Sum of proper divisors (its aliquot sum) s(n): 217
• 455 is a deficient number, because the sum of its proper divisors (217) is less than itself. Its deficiency is 238

### Bases of 455

• Binary: 1110001112
• Base-36: CN

### Squares and roots of 455

• 455 squared (4552) is 207025
• 455 cubed (4553) is 94196375
• The square root of 455 is 21.3307290081
• The cube root of 455 is 7.6913716811

### Scales and comparisons

How big is 455?
• 455 seconds is equal to 7 minutes, 35 seconds.
• To count from 1 to 455 would take you about three 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 455 cubic inches would be around 0.6 feet tall.

### Recreational maths with 455

• 455 backwards is 554
• The number of decimal digits it has is: 3
• The sum of 455's digits is 14
• More coming soon!