85161759 has 4 divisors (see below), whose sum is σ = 113549016. Its totient is φ = 56774504.

The previous prime is 85161751. The next prime is 85161761. The reversal of 85161759 is 95716158.

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 85161759 - 2³ = 85161751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85161759.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85161751) 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, 14193624 + ... + 14193629.

It is an arithmetic number, because the mean of its divisors is an integer number (28387254).

Almost surely, 2^85161759 is an apocalyptic number.

85161759 is a deficient number, since it is larger than the sum of its proper divisors (28387257).

85161759 is a wasteful number, since it uses less digits than its factorization.

85161759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28387256.

The product of its digits is 75600, while the sum is 42.

The square root of 85161759 is about 9228.3129010670. The cubic root of 85161759 is about 439.9617029340.

The spelling of 85161759 in words is "eighty-five million, one hundred sixty-one thousand, seven hundred fifty-nine".