Life expectancy is a tricky statistic to use correctly, because it is significantly dragged lower due to the high rate of death in birth / infancy ( https://en.wikipedia.org/wiki/Life_expectancy ). Once that hurdle is gotten over, your life expectancy increases dramatically, so it's not sure as to whether or not Curie actually lived a long life compared to contemporary adults.

Considering that we know that Curie's death was caused by longterm exposure to radiation ( https://en.wikipedia.org/wiki/Marie_Curie#Death ), you could reasonably expect her to have lived a much longer life without such exposure.