85533156 has 18 divisors (see below), whose sum is σ = 216208902. Its totient is φ = 28511040.

The previous prime is 85533139. The next prime is 85533187. The reversal of 85533156 is 65133558.

It can be written as a sum of positive squares in only one way, i.e., 60372900 + 25160256 = 7770^2 + 5016^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2375921 = 85533156 / (8 + 5 + 5 + 3 + 3 + 1 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 85533156.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1187925 + ... + 1187996.

Almost surely, 2^85533156 is an apocalyptic number.

It is an amenable number.

85533156 is an abundant number, since it is smaller than the sum of its proper divisors (130675746).

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

85533156 is a wasteful number, since it uses less digits than its factorization.

85533156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375931 (or 2375926 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 85533156 is about 9248.4137018194. The cubic root of 85533156 is about 440.6003444179.

The spelling of 85533156 in words is "eighty-five million, five hundred thirty-three thousand, one hundred fifty-six".