| Number | 521,820 |
|---|---|
| in Words | five hundred and twenty-one thousand eight hundred and twenty |
| Ordinal | five hundred and twenty-one thousand eight hundred and twentieth (521820th) |
| On a check | Five hundred and twenty-one thousand eight hundred and twenty and 00/100 |
521,820 in words is written as five hundred and twenty-one thousand eight hundred and twenty.
On a check, write Five hundred and twenty-one thousand eight hundred and twenty and 00/100 on the line for the amount.
The ordinal form of 521,820 is five hundred and twenty-one thousand eight hundred and twentieth (521820th).
A regular icosahedron — one of the five Platonic solids — has exactly 20 triangular faces. It's also the shape of a classic D20 die. 20 is the base of the Mayan counting system, matching the number of fingers and toes humans have.