In Hebrew, the numerical value of the word Elohim is 52 by using the gematria in "n": 1+12+5+10+24=52.
Elohim often refers to Angels.
I'd assume that the answer would fit Nekros' theme, so I'm gonna go out on a limb and say it's Azrael, the angel of death.

Also, the Aztecs divided time into periods of 52 years, if anyone wants to run with that.