85511859 has 8 divisors (see below), whose sum is σ = 114062592. Its totient is φ = 56984520.

The previous prime is 85511851. The next prime is 85511869. The reversal of 85511859 is 95811558.

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

It is not a de Polignac number, because 85511859 - 2³ = 85511851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85511859.

It is not an unprimeable number, because it can be changed into a prime (85511851) 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, 6274 + ... + 14504.

It is an arithmetic number, because the mean of its divisors is an integer number (14257824).

Almost surely, 2^85511859 is an apocalyptic number.

85511859 is a deficient number, since it is larger than the sum of its proper divisors (28550733).

85511859 is a wasteful number, since it uses less digits than its factorization.

85511859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11697.

The product of its digits is 72000, while the sum is 42.

The square root of 85511859 is about 9247.2622434967. The cubic root of 85511859 is about 440.5637728516.

The spelling of 85511859 in words is "eighty-five million, five hundred eleven thousand, eight hundred fifty-nine".