85161289 has 8 divisors (see below), whose sum is σ = 87426560. Its totient is φ = 82925856.

The previous prime is 85161283. The next prime is 85161311. The reversal of 85161289 is 98216158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85161289 - 2¹¹ = 85159241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85161283) 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 7 ways as a sum of consecutive naturals, for example, 1617 + ... + 13150.

It is an arithmetic number, because the mean of its divisors is an integer number (10928320).

Almost surely, 2^85161289 is an apocalyptic number.

It is an amenable number.

85161289 is a deficient number, since it is larger than the sum of its proper divisors (2265271).

85161289 is a wasteful number, since it uses less digits than its factorization.

85161289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14919.

The product of its digits is 34560, while the sum is 40.

The square root of 85161289 is about 9228.2874359222. The cubic root of 85161289 is about 439.9608935630.

The spelling of 85161289 in words is "eighty-five million, one hundred sixty-one thousand, two hundred eighty-nine".