My RHR is 42 BPM and I have good fitness, but nothing special. FTP (Ramp Test) of +/- 330) and V02max (Garmin) of 63 ml/kg/min. As I am still around 88kg, my absolute V02max is around 5.5 l/min, which is quite ok. I think this could be the reason, why my RHR is quite low and vice versa. But I am definetely not a successful or talented athlete. According to this image (Sourve: https://www.researchgate.net/figure/Distribution-of-average-daily-resting-heart-rates-The-average-daily-RHR-for-57-836_fig2_339061433) you are probably in the lower 3% of males:
