# 505

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

What does the number 505 look like?

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

505 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 505:

### 5 × 101

See below for interesting mathematical facts about the number 505 from the Numbermatics database.

### Names of 505

• Cardinal: 505 can be written as Five hundred five.

### Scientific notation

• Scientific notation: 5.05 × 102

### Factors of 505

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 106

### Divisors of 505

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 612
• Sum of proper divisors (its aliquot sum) s(n): 107
• 505 is a deficient number, because the sum of its proper divisors (107) is less than itself. Its deficiency is 398

### Bases of 505

• Binary: 1111110012
• Base-36: E1

### Squares and roots of 505

• 505 squared (5052) is 255025
• 505 cubed (5053) is 128787625
• The square root of 505 is 22.4722050543
• The cube root of 505 is 7.9633742415

### Scales and comparisons

How big is 505?
• 505 seconds is equal to 8 minutes, 25 seconds.
• To count from 1 to 505 would take you about four 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 505 cubic inches would be around 0.7 feet tall.

### Recreational maths with 505

• 505 is the same when its digits are reversed! That makes it a palindromic number.
• The number of decimal digits it has is: 3
• The sum of 505's digits is 10
• More coming soon!

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The information we have on file for 505 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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