odd, composite · 855th positive integer
The number 855
855 is an odd composite number. It is the 855th positive integer.
Quick reference
| Prime factorization | 3 × 3 × 5 × 19 |
| Divisors | 1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855 |
| Binary | 1101010111 |
| Hexadecimal | 0x357 |
| Roman numeral | DCCCLV |
| Digit sum | 18 |
| Properties | odd, composite |
Reading 855 in NumGrid context
The 855 record above pulls directly from classical number theory plus NumGrid solver-derived puzzle statistics. What follows is the per-entity context — how 855 sits in the broader integer properties and number-guessing puzzles distribution and which underlying factors drive the headline numbers.
Every number on this page links back to classical number theory plus NumGrid solver-derived puzzle statistics; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for 855’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 855 a prime number?
No. 855 is composite. Its prime factorization is 3 × 3 × 5 × 19.
What are the factors of 855?
The factors (divisors) of 855 are 1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855.
What is 855 in binary?
855 in binary is 1101010111. In hexadecimal it's 357.
What is 855 as a Roman numeral?
855 in Roman numerals is DCCCLV.
What's the digit sum of 855?
Adding the digits of 855: 8 + 5 + 5 = 18.