85285540 has 36 divisors (see below), whose sum is σ = 181289556. Its totient is φ = 33700992.

The previous prime is 85285537. The next prime is 85285559. The reversal of 85285540 is 4558258.

It can be written as a sum of positive squares in 6 ways, for example, as 166464 + 85119076 = 408^2 + 9226^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 85285540.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 492894 + ... + 493066.

It is an arithmetic number, because the mean of its divisors is an integer number (5035821).

Almost surely, 2^85285540 is an apocalyptic number.

It is an amenable number.

85285540 is an abundant number, since it is smaller than the sum of its proper divisors (96004016).

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

85285540 is a wasteful number, since it uses less digits than its factorization.

85285540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 37.

The square root of 85285540 is about 9235.0170546675. The cubic root of 85285540 is about 440.1747584043.

The spelling of 85285540 in words is "eighty-five million, two hundred eighty-five thousand, five hundred forty".