85189511 has 4 divisors (see below), whose sum is σ = 92934024. Its totient is φ = 77445000.

The previous prime is 85189487. The next prime is 85189529. The reversal of 85189511 is 11598158.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85189511 - 2²² = 80995207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85182511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3872240 + ... + 3872261.

It is an arithmetic number, because the mean of its divisors is an integer number (23233506).

Almost surely, 2^85189511 is an apocalyptic number.

85189511 is a deficient number, since it is larger than the sum of its proper divisors (7744513).

85189511 is a wasteful number, since it uses less digits than its factorization.

85189511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7744512.

The product of its digits is 14400, while the sum is 38.

The square root of 85189511 is about 9229.8164120420. The cubic root of 85189511 is about 440.0094884317.

The spelling of 85189511 in words is "eighty-five million, one hundred eighty-nine thousand, five hundred eleven".