I am 52 years old and have paid social security for four and a half years. Can I continue to pay for it? I can pay in one lump sum.

2. If you haven't paid it before, you can apply for an extension of payment from 52 to 60, to 65, and then to 60, so you already have 13 years of old-age insurance, but you still need two years. Retire at the age of 65, and you can get a pension by paying it in one lump sum for two years.

Since you are 52 years old, you need to pay monthly every year, otherwise you will spend more when you are 65 years old.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.