It is an Ulam number.
It is an unprimeable number.
51954 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
251954 is an apocalyptic number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
51954 is a wasteful number, since it uses less digits than its factorization.
51954 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1249.
The square root of 51954 is about 227.9342010318. The cubic root of 51954 is about 37.3141021985.
The spelling of 51954 in words is "fifty-one thousand, nine hundred fifty-four".