85521516 has 24 divisors (see below), whose sum is σ = 201077184. Its totient is φ = 28289040.

The previous prime is 85521497. The next prime is 85521563. The reversal of 85521516 is 61512558.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25630 + ... + 28773.

It is an arithmetic number, because the mean of its divisors is an integer number (8378216).

Almost surely, 2^85521516 is an apocalyptic number.

It is an amenable number.

85521516 is an abundant number, since it is smaller than the sum of its proper divisors (115555668).

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

85521516 is a wasteful number, since it uses less digits than its factorization.

85521516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54541 (or 54539 counting only the distinct ones).

The product of its digits is 12000, while the sum is 33.

The square root of 85521516 is about 9247.7843832996. The cubic root of 85521516 is about 440.5803567667.

The spelling of 85521516 in words is "eighty-five million, five hundred twenty-one thousand, five hundred sixteen".