85321500 has 96 divisors (see below), whose sum is σ = 271095552. Its totient is φ = 20680000.

The previous prime is 85321499. The next prime is 85321529. The reversal of 85321500 is 512358.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13915 + ... + 19085.

It is an arithmetic number, because the mean of its divisors is an integer number (2823912).

Almost surely, 2^85321500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85321500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135547776).

85321500 is an abundant number, since it is smaller than the sum of its proper divisors (185774052).

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

85321500 is a wasteful number, since it uses less digits than its factorization.

85321500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204 (or 5192 counting only the distinct ones).

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

The square root of 85321500 is about 9236.9637868728. The cubic root of 85321500 is about 440.2366151589.

Adding to 85321500 its reverse (512358), we get a palindrome (85833858).

The spelling of 85321500 in words is "eighty-five million, three hundred twenty-one thousand, five hundred".