85159191 has 8 divisors (see below), whose sum is σ = 122279920. Its totient is φ = 52405632.

The previous prime is 85159189. The next prime is 85159223. The reversal of 85159191 is 19195158.

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

It is not a de Polignac number, because 85159191 - 2¹ = 85159189 is a prime.

It is a super-3 number, since 3×85159191³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2183569 = 85159191 / (8 + 5 + 1 + 5 + 9 + 1 + 9 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85159891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1091746 + ... + 1091823.

It is an arithmetic number, because the mean of its divisors is an integer number (15284990).

Almost surely, 2^85159191 is an apocalyptic number.

85159191 is a deficient number, since it is larger than the sum of its proper divisors (37120729).

85159191 is a wasteful number, since it uses less digits than its factorization.

85159191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183585.

The product of its digits is 16200, while the sum is 39.

The square root of 85159191 is about 9228.1737629934. The cubic root of 85159191 is about 439.9572806321.

The spelling of 85159191 in words is "eighty-five million, one hundred fifty-nine thousand, one hundred ninety-one".