85505284 has 6 divisors (see below), whose sum is σ = 149634254. Its totient is φ = 42752640.

The previous prime is 85505279. The next prime is 85505293. The reversal of 85505284 is 48250558.

It can be written as a sum of positive squares in only one way, i.e., 82301184 + 3204100 = 9072^2 + 1790^2 .

It is a super-5 number, since 5×85505284⁵ (a number of 41 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10688157 + ... + 10688164.

Almost surely, 2^85505284 is an apocalyptic number.

It is an amenable number.

85505284 is a deficient number, since it is larger than the sum of its proper divisors (64128970).

85505284 is a wasteful number, since it uses less digits than its factorization.

85505284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21376325 (or 21376323 counting only the distinct ones).

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

The square root of 85505284 is about 9246.9067260355. The cubic root of 85505284 is about 440.5524809245.

The spelling of 85505284 in words is "eighty-five million, five hundred five thousand, two hundred eighty-four".