8581161 has 8 divisors (see below), whose sum is σ = 11461824. Its totient is φ = 5710640.

The previous prime is 8581147. The next prime is 8581163. The reversal of 8581161 is 1611858.

It is a happy number.

8581161 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 8581161 - 2¹¹ = 8579113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8581163) 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, 270 + ... + 4151.

It is an arithmetic number, because the mean of its divisors is an integer number (1432728).

Almost surely, 2^8581161 is an apocalyptic number.

It is an amenable number.

8581161 is a deficient number, since it is larger than the sum of its proper divisors (2880663).

8581161 is a wasteful number, since it uses less digits than its factorization.

8581161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5071.

The product of its digits is 1920, while the sum is 30.

The square root of 8581161 is about 2929.3618759040. The cubic root of 8581161 is about 204.7302500029.

The spelling of 8581161 in words is "eight million, five hundred eighty-one thousand, one hundred sixty-one".