How do you spell 555 in french?

There isn't a direct translation for "555" in French like there is in English.

However, here are some ways to express it:

* Cinq cent cinquante-cinq: This is the literal translation of "five hundred fifty-five."

* Triple cinq: This is a more informal way of saying "triple five."

* Cinq cinq cinq: This is the most common and straightforward way to say "555" in French.

The best way to say it would depend on the context and the audience.