It is a Curzon number.
It is a plaindrome in base 16.
It is a congruent number.
It is an unprimeable number.
91854 is a Friedman number, since it can be written as (9+5)*(4-1)^8, using all its digits and the basic arithmetic operations.
291854 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 91854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118092).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
91854 is an frugal number, since it uses more digits than its factorization.
91854 is an evil number, because the sum of its binary digits is even.
The square root of 91854 is about 303.0742483287. The cubic root of 91854 is about 45.1196814147.
The spelling of 91854 in words is "ninety-one thousand, eight hundred fifty-four".