155561

155,561 is an odd composite number composed of three prime numbers multiplied together.

What does the number 155561 look like?

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

155561 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 155561:

7 × 71 × 313

See below for interesting mathematical facts about the number 155561 from the Numbermatics database.

Names of 155561

Cardinal: 155561 can be written as One hundred fifty-five thousand, five hundred sixty-one.

Scientific notation

Scientific notation: 1.55561 × 10⁵

Factors of 155561

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 3
Sum of prime factors: 391

Divisors of 155561

Number of divisors d(n): 8
Complete list of divisors:
1 7 71 313 497 2191 22223 155561
Sum of all divisors σ(n): 180864
Sum of proper divisors (its aliquot sum) s(n): 25303
155561 is a deficient number, because the sum of its proper divisors (25303) is less than itself. Its deficiency is 130258

Bases of 155561

Binary: 100101111110101001₂
Hexadecimal: 0x25FA9
Base-36: 3C15

Squares and roots of 155561

155561 squared (155561²) is 24199224721
155561 cubed (155561³) is 3764455596823481
The square root of 155561 is 394.4122209059
The cube root of 155561 is 53.7815823047

Scales and comparisons

How big is 155561?

155,561 seconds is equal to 1 day, 19 hours, 12 minutes, 41 seconds.
To count from 1 to 155,561 would take you about nineteen hours.

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 155561 cubic inches would be around 4.5 feet tall.

Recreational maths with 155561

155561 backwards is 165551
The number of decimal digits it has is: 6
The sum of 155561's digits is 23
More coming soon!

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The information we have on file for 155561 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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