85019511 has 8 divisors (see below), whose sum is σ = 113687424. Its totient is φ = 56515640.

The previous prime is 85019507. The next prime is 85019513. The reversal of 85019511 is 11591058.

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 85019511 - 2² = 85019507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85019513) 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, 39795 + ... + 41876.

It is an arithmetic number, because the mean of its divisors is an integer number (14210928).

Almost surely, 2^85019511 is an apocalyptic number.

85019511 is a deficient number, since it is larger than the sum of its proper divisors (28667913).

85019511 is a wasteful number, since it uses less digits than its factorization.

85019511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82021.

The product of its (nonzero) digits is 1800, while the sum is 30.

The square root of 85019511 is about 9220.6025291192. The cubic root of 85019511 is about 439.7166064239.

The spelling of 85019511 in words is "eighty-five million, nineteen thousand, five hundred eleven".