8581081 has 4 divisors (see below), whose sum is σ = 8629200. Its totient is φ = 8532964.

The previous prime is 8581051. The next prime is 8581087. The reversal of 8581081 is 1801858.

It is a happy number.

8581081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1801858 = 2 ⋅900929.

It is a cyclic number.

It is not a de Polignac number, because 8581081 - 2⁵ = 8581049 is a prime.

It is a super-2 number, since 2×8581081² = 147269902257122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8581087) 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, 23791 + ... + 24148.

It is an arithmetic number, because the mean of its divisors is an integer number (2157300).

Almost surely, 2^8581081 is an apocalyptic number.

It is an amenable number.

8581081 is a deficient number, since it is larger than the sum of its proper divisors (48119).

8581081 is a wasteful number, since it uses less digits than its factorization.

8581081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48118.

The product of its (nonzero) digits is 2560, while the sum is 31.

The square root of 8581081 is about 2929.3482210212. The cubic root of 8581081 is about 204.7296137848.

The spelling of 8581081 in words is "eight million, five hundred eighty-one thousand, eighty-one".