I've been repeating this little fact for the past month, ever since I read it in the introduction to Napoleon: A Life (Napoleon the Great in the UK) by Andrew Roberts.
There have been more books published with Napoleon in their title than there have been days since he died (May 5, 1821).
I only have about 47 of them (depending on how you count multi-volume books, like Hazlitt's six-volume biography from 1830).
I'm about halfway through Roberts' biography and I really like it - well written, deeply researched, and some interesting insights. I've only read four other biographies of Napoleon, but this one is my favorite so far.