85171272 has 16 divisors (see below), whose sum is σ = 212928240. Its totient is φ = 28390416.

The previous prime is 85171267. The next prime is 85171301. The reversal of 85171272 is 27217158.

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 3 ways as a sum of consecutive naturals, for example, 1774378 + ... + 1774425.

It is an arithmetic number, because the mean of its divisors is an integer number (13308015).

Almost surely, 2^85171272 is an apocalyptic number.

It is an amenable number.

85171272 is an abundant number, since it is smaller than the sum of its proper divisors (127756968).

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

85171272 is a wasteful number, since it uses less digits than its factorization.

85171272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3548812 (or 3548808 counting only the distinct ones).

The product of its digits is 7840, while the sum is 33.

The square root of 85171272 is about 9228.8283113297. The cubic root of 85171272 is about 439.9780843079.

The spelling of 85171272 in words is "eighty-five million, one hundred seventy-one thousand, two hundred seventy-two".