85520872 has 16 divisors (see below), whose sum is σ = 160769700. Its totient is φ = 42648960.

The previous prime is 85520839. The next prime is 85520873. The reversal of 85520872 is 27802558.

It can be written as a sum of positive squares in 2 ways, for example, as 83429956 + 2090916 = 9134^2 + 1446^2 .

It is not an unprimeable number, because it can be changed into a prime (85520873) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10629 + ... + 16852.

Almost surely, 2^85520872 is an apocalyptic number.

It is an amenable number.

85520872 is a deficient number, since it is larger than the sum of its proper divisors (75248828).

85520872 is a wasteful number, since it uses less digits than its factorization.

85520872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27876 (or 27872 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 85520872 is about 9247.7495640831. The cubic root of 85520872 is about 440.5792508677.

The spelling of 85520872 in words is "eighty-five million, five hundred twenty thousand, eight hundred seventy-two".