odd, prime · 53rd positive integer
The number 53
53 is an odd prime number. It is the 53rd positive integer.
Quick reference
| Prime factorization | 53 (prime) |
| Divisors | 1, 53 |
| Binary | 110101 |
| Hexadecimal | 0x35 |
| Roman numeral | LIII |
| Digit sum | 8 |
| Properties | odd, prime |
Reading 53 in NumGrid context
The 53 record above pulls directly from classical number theory plus NumGrid solver-derived puzzle statistics. What follows is the per-entity context — how 53 sits in the broader integer properties and number-guessing puzzles distribution and which underlying factors drive the headline numbers.
The methodology behind every numeric value on this page is publicly documented on the classical number theory plus NumGrid solver-derived puzzle statistics portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for 53’s peers within positive integers within the NumGrid target pool. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Frequently asked
Is 53 a prime number?
Yes. 53 is prime — its only divisors are 1 and itself.
What are the factors of 53?
The factors (divisors) of 53 are 1, 53.
What is 53 in binary?
53 in binary is 110101. In hexadecimal it's 35.
What is 53 as a Roman numeral?
53 in Roman numerals is LIII.
What's the digit sum of 53?
Adding the digits of 53: 5 + 3 = 8.