85195520 has 72 divisors (see below), whose sum is σ = 206403120. Its totient is φ = 33689600.

The previous prime is 85195511. The next prime is 85195531. The reversal of 85195520 is 2559158.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128951 + ... + 129609.

It is an arithmetic number, because the mean of its divisors is an integer number (2866710).

Almost surely, 2^85195520 is an apocalyptic number.

85195520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85195520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103201560).

85195520 is an abundant number, since it is smaller than the sum of its proper divisors (121207600).

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

85195520 is a wasteful number, since it uses less digits than its factorization.

85195520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 35.

The square root of 85195520 is about 9230.1419274029. The cubic root of 85195520 is about 440.0198338167.

The spelling of 85195520 in words is "eighty-five million, one hundred ninety-five thousand, five hundred twenty".