1. I am a three digit number 2. My second and last digit are the same
3. The product of the digits of the number one less than me is not zero 4. The number one less than me is divisible by 45
SUBJECT: MATH
Please help me with this riddle. Thanks.

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655