85521366 has 48 divisors (see below), whose sum is σ = 221082480. Its totient is φ = 24433920.

The previous prime is 85521361. The next prime is 85521391. The reversal of 85521366 is 66312558.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 85521366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85521361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13515 + ... + 18806.

It is an arithmetic number, because the mean of its divisors is an integer number (4605885).

Almost surely, 2^85521366 is an apocalyptic number.

85521366 is an abundant number, since it is smaller than the sum of its proper divisors (135561114).

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

85521366 is a wasteful number, since it uses less digits than its factorization.

85521366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32346 (or 32333 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 85521366 is about 9247.7762732454. The cubic root of 85521366 is about 440.5800991820.

The spelling of 85521366 in words is "eighty-five million, five hundred twenty-one thousand, three hundred sixty-six".