My rank in JEE is 54000. Can I get a seat in central universities like IIITs or NITs?

No, you cannot get seat In NIT or IIIT, but you have an option of best private universities and colleges like, Nirma university, LPU, Chandigarh university, Amity university, JECRC, Poornima college Jaipur, Arya College Jaipur, SkIT Jaipur, Galgotia University and many more are there. You can search