Here's why:
* Different Publishers and Translations: The Geronimo Stilton series is incredibly popular worldwide, leading to many different publishers and translations. This means the total number of books could vary depending on which edition you're looking at.
* New Releases and Series: The Geronimo Stilton series continues to release new books and spin-offs. So, even if there were 52 books at one point, that number is likely to change.
* Counting Methods: Do you consider only the main series, or also spin-offs like "Geronimo Stilton & The Pirates" and "The Adventures of Thea Stilton"? This can affect the final count.
To find a more accurate answer, you'd need to specify:
* Which publisher/edition are you interested in?
* Are you including spin-offs and special editions?
* Are you looking at the original Italian language, or translations?
I hope this helps!