155405991

155,405,991 is an odd composite number composed of three prime numbers multiplied together.

What does the number 155405991 look like?

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

155405991 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 155405991:

3 × 13 × 3984769

See below for interesting mathematical facts about the number 155405991 from the Numbermatics database.

Names of 155405991

Cardinal: 155405991 can be written as One hundred fifty-five million, four hundred five thousand, nine hundred ninety-one.

Scientific notation

Scientific notation: 1.55405991 × 10⁸

Factors of 155405991

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 3
Sum of prime factors: 3984785

Divisors of 155405991

Number of divisors d(n): 8
Complete list of divisors:
1 3 13 39 3984769 11954307 51801997 155405991
Sum of all divisors σ(n): 223147120
Sum of proper divisors (its aliquot sum) s(n): 67741129
155405991 is a deficient number, because the sum of its proper divisors (67741129) is less than itself. Its deficiency is 87664862

Bases of 155405991

Binary: 1001010000110100111010100111₂
Hexadecimal: 0x9434EA7
Base-36: 2KIW13

Squares and roots of 155405991

155405991 squared (155405991²) is 24151022038692081
155405991 cubed (155405991³) is 3753213513585783191657271
The square root of 155405991 is 12466.1939259743
The cube root of 155405991 is 537.6371278755

Scales and comparisons

How big is 155405991?

155,405,991 seconds is equal to 4 years, 48 weeks, 6 days, 16 hours, 19 minutes, 51 seconds.
To count from 1 to 155,405,991 would take you about seven years!

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 155405991 cubic inches would be around 44.8 feet tall.

Recreational maths with 155405991

155405991 backwards is 199504551
155405991 is a Harshad number.
The number of decimal digits it has is: 9
The sum of 155405991's digits is 39
More coming soon!

Copy this link to share with anyone:

Share this page on social media:

Link to this page

HTML: To link to this page, just copy and paste the link below into your blog, web page or email.

<a href="https://numbermatics.com/n/155405991/?utm_source=shared">Number 155405991 - Facts about the integer</a>

BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:

[url=https://numbermatics.com/n/155405991/?utm_source=shared]Number 155405991 - Facts about the integer[/url]

Cite this page

MLA style:
"Number 155405991 - Facts about the integer". Numbermatics.com. 2024. Web. 4 May 2024.

APA style:
Numbermatics. (2024). Number 155405991 - Facts about the integer. Retrieved 4 May 2024, from https://numbermatics.com/n/155405991/

Chicago style:
Numbermatics. 2024. "Number 155405991 - Facts about the integer". https://numbermatics.com/n/155405991/

The information we have on file for 155405991 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!

Keywords: Divisors of 155405991, math, Factors of 155405991, curriculum, school, college, exams, university, Prime factorization of 155405991, STEM, science, technology, engineering, physics, economics, calculator, one hundred fifty-five million, four hundred five thousand, nine hundred ninety-one.