85255320 has 64 divisors (see below), whose sum is σ = 256608000. Its totient is φ = 22659968.

The previous prime is 85255297. The next prime is 85255327. The reversal of 85255320 is 2355258.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85255327) by changing a digit.

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, 42091 + ... + 44069.

It is an arithmetic number, because the mean of its divisors is an integer number (4009500).

Almost surely, 2^85255320 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 85255320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128304000).

85255320 is an abundant number, since it is smaller than the sum of its proper divisors (171352680).

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

85255320 is a wasteful number, since it uses less digits than its factorization.

85255320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352 (or 2348 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 85255320 is about 9233.3807459673. The cubic root of 85255320 is about 440.1227618890.

The spelling of 85255320 in words is "eighty-five million, two hundred fifty-five thousand, three hundred twenty".