85521116 has 12 divisors (see below), whose sum is σ = 154822920. Its totient is φ = 41286000.

The previous prime is 85521113. The next prime is 85521127. The reversal of 85521116 is 61112558.

It is a super-2 number, since 2×85521116² = 14627722563770912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85521113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368510 + ... + 368741.

It is an arithmetic number, because the mean of its divisors is an integer number (12901910).

Almost surely, 2^85521116 is an apocalyptic number.

It is an amenable number.

85521116 is a deficient number, since it is larger than the sum of its proper divisors (69301804).

85521116 is a wasteful number, since it uses less digits than its factorization.

85521116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737284 (or 737282 counting only the distinct ones).

The product of its digits is 2400, while the sum is 29.

The square root of 85521116 is about 9247.7627564725. The cubic root of 85521116 is about 440.5796698736.

The spelling of 85521116 in words is "eighty-five million, five hundred twenty-one thousand, one hundred sixteen".