I’ve just googled Dell XPS M1530 and it seems like it shipped with a Core 2 Duo CPU, which is 64 bit.
For reference, the last mainstream 32 bit desktop processors were launched over 20 years ago. As a rule, if you’re trying to run a 32 bit machine in this day and age it is probably an antique, and running modern software on it would not be all that sensible even if you could.