No.
Form 49A is the application form for PAN (Permanent Account Number).
CCCLX is the number 280 in roman numerals. This number is used to represent what roman used to write.
we write 5 in roman number like this :- V
The number 1450 is written in roman numerals as MCDL.
It is: 2005 = MMV in Roman numerals
CCXLV
MV
one
445
MMII
XCI