I believe its the Neutron star, the larger of the two, that is rotating at 30,000 RPM. The diameter is estimated at about 20km. Someone do the math!
https://phys.org/news/2020-10-mystery-unusual-neutron-star-revealed.html
Im an engineer and system designer, with a Physics degree from 1974, and a lifelong fascination with Gods Uninverse and especially astronomy.
Meaning my ability to wrap my head around some really hard concepts is usually pretty good.
But Ill admit, the amount of energy represented by something with the mass of two Suns compressed into a ~20km diameter oblate spheroid spinning at 500 RPS truly boggles my mind.
All praise, wonder, and gratitude to the Almighty Creator who made such marvelous things, and granted us the ability to discover them.