27401 is a number whose sum of prime factors (counted with multiplicity) is a number whose digits are identical, here 111. See Bespoken for Sequences entry.

27401 is a sphenic, cyclic, Duffinian and happy number.

27401 can be converted to a digit equation:

-2 + 7 - 4 = 0 + 1

27401 stabilises after about 55 generations of Conway's Game of Life rules to a blinker, two blocks and a ship (or boat), I can't remember which.