85858 is nontrivially palindromic in base 10.
It is a semiprime because it is the product of two primes.
It is an alternating number because its digits alternate between even and odd.
85858 is an undulating number in base 10.
85858 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
285858 is an apocalyptic number.
85858 is a wasteful number, since it uses less digits than its factorization.
85858 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 42931.
The square root of 85858 is about 293.0153579593. The cubic root of 85858 is about 44.1157421051.
The spelling of 85858 in words is "eighty-five thousand, eight hundred fifty-eight".