85711559 has 16 divisors (see below), whose sum is σ = 92958720. Its totient is φ = 78835680.

The previous prime is 85711543. The next prime is 85711567. The reversal of 85711559 is 95511758.

It is a cyclic number.

It is not a de Polignac number, because 85711559 - 2⁴ = 85711543 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 (85711519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59522 + ... + 60944.

It is an arithmetic number, because the mean of its divisors is an integer number (5809920).

Almost surely, 2^85711559 is an apocalyptic number.

85711559 is a deficient number, since it is larger than the sum of its proper divisors (7247161).

85711559 is a wasteful number, since it uses less digits than its factorization.

85711559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550.

The product of its digits is 63000, while the sum is 41.

The square root of 85711559 is about 9258.0537371523. The cubic root of 85711559 is about 440.9064628861.

The spelling of 85711559 in words is "eighty-five million, seven hundred eleven thousand, five hundred fifty-nine".