85231500 has 48 divisors (see below), whose sum is σ = 248198496. Its totient is φ = 22728000.

The previous prime is 85231483. The next prime is 85231561. The reversal of 85231500 is 513258.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26911 + ... + 29910.

It is an arithmetic number, because the mean of its divisors is an integer number (5170802).

Almost surely, 2^85231500 is an apocalyptic number.

It is an amenable number.

85231500 is an abundant number, since it is smaller than the sum of its proper divisors (162966996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85231500 is a wasteful number, since it uses less digits than its factorization.

85231500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56843 (or 56831 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 85231500 is about 9232.0907707843. The cubic root of 85231500 is about 440.0817685499.

Adding to 85231500 its reverse (513258), we get a palindrome (85744758).

The spelling of 85231500 in words is "eighty-five million, two hundred thirty-one thousand, five hundred".