5816081 has 4 divisors (see below), whose sum is σ = 5823012. Its totient is φ = 5809152.

The previous prime is 5816077. The next prime is 5816089. The reversal of 5816081 is 1806185.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1806185 = 5 ⋅361237.

It can be written as a sum of positive squares in 2 ways, for example, as 2430481 + 3385600 = 1559^2 + 1840^2 .

It is a cyclic number.

It is not a de Polignac number, because 5816081 - 2² = 5816077 is a prime.

It is a super-2 number, since 2×5816081² = 67653596397122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5816089) 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, 2000 + ... + 3953.

It is an arithmetic number, because the mean of its divisors is an integer number (1455753).

Almost surely, 2^5816081 is an apocalyptic number.

It is an amenable number.

5816081 is a deficient number, since it is larger than the sum of its proper divisors (6931).

5816081 is an equidigital number, since it uses as much as digits as its factorization.

5816081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6930.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 5816081 is about 2411.6552407009. The cubic root of 5816081 is about 179.8360750396.

The spelling of 5816081 in words is "five million, eight hundred sixteen thousand, eighty-one".