84551216 has 40 divisors (see below), whose sum is σ = 177124080. Its totient is φ = 38962944.

The previous prime is 84551209. The next prime is 84551227. The reversal of 84551216 is 61215548.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7490 + ... + 15006.

It is an arithmetic number, because the mean of its divisors is an integer number (4428102).

Almost surely, 2^84551216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84551216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88562040).

84551216 is an abundant number, since it is smaller than the sum of its proper divisors (92572864).

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

84551216 is a wasteful number, since it uses less digits than its factorization.

84551216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7581 (or 7575 counting only the distinct ones).

The product of its digits is 9600, while the sum is 32.

The square root of 84551216 is about 9195.1735165792. The cubic root of 84551216 is about 438.9077869078.

The spelling of 84551216 in words is "eighty-four million, five hundred fifty-one thousand, two hundred sixteen".