# 545

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

What does the number 545 look like?

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

545 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 545:

### 5 × 109

See below for interesting mathematical facts about the number 545 from the Numbermatics database.

### Names of 545

• Cardinal: 545 can be written as Five hundred forty-five.

### Scientific notation

• Scientific notation: 5.45 × 102

### Factors of 545

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 114

### Divisors of 545

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 660
• Sum of proper divisors (its aliquot sum) s(n): 115
• 545 is a deficient number, because the sum of its proper divisors (115) is less than itself. Its deficiency is 430

### Bases of 545

• Binary: 10001000012
• Base-36: F5

### Squares and roots of 545

• 545 squared (5452) is 297025
• 545 cubed (5453) is 161878625
• The square root of 545 is 23.3452350599
• The cube root of 545 is 8.1683091703

### Scales and comparisons

How big is 545?
• 545 seconds is equal to 9 minutes, 5 seconds.
• To count from 1 to 545 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 545 cubic inches would be around 0.7 feet tall.

### Recreational maths with 545

• 545 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 545's digits is 14
• More coming soon!