859558161 has 32 divisors (see below), whose sum is σ = 1430784000. Its totient is φ = 445927680.

The previous prime is 859558009. The next prime is 859558171. The reversal of 859558161 is 161855958.

859558161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 859558161 - 2¹⁹ = 859033873 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 859558161.

It is not an unprimeable number, because it can be changed into a prime (859558171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210265 + ... + 214313.

It is an arithmetic number, because the mean of its divisors is an integer number (44712000).

Almost surely, 2^859558161 is an apocalyptic number.

It is an amenable number.

859558161 is a deficient number, since it is larger than the sum of its proper divisors (571225839).

859558161 is a wasteful number, since it uses less digits than its factorization.

859558161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4989.

The product of its digits is 432000, while the sum is 48.

The square root of 859558161 is about 29318.2223369699. Note that the first 3 decimals coincide. The cubic root of 859558161 is about 950.8056548845.

The spelling of 859558161 in words is "eight hundred fifty-nine million, five hundred fifty-eight thousand, one hundred sixty-one".