85537512 has 64 divisors (see below), whose sum is σ = 239889600. Its totient is φ = 28238400.

The previous prime is 85537511. The next prime is 85537519. The reversal of 85537512 is 21573558.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (85537511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21262 + ... + 24962.

It is an arithmetic number, because the mean of its divisors is an integer number (3748275).

Almost surely, 2^85537512 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 85537512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119944800).

85537512 is an abundant number, since it is smaller than the sum of its proper divisors (154352088).

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

85537512 is a wasteful number, since it uses less digits than its factorization.

85537512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823 (or 3813 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 85537512 is about 9248.6491986668. The cubic root of 85537512 is about 440.6078238664.

The spelling of 85537512 in words is "eighty-five million, five hundred thirty-seven thousand, five hundred twelve".