5781081 has 16 divisors (see below), whose sum is σ = 7952256. Its totient is φ = 3734016.

The previous prime is 5781077. The next prime is 5781091. The reversal of 5781081 is 1801875.

It is not a de Polignac number, because 5781081 - 2² = 5781077 is a prime.

It is a super-2 number, since 2×5781081² = 66841795057122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5781011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16201 + ... + 16553.

It is an arithmetic number, because the mean of its divisors is an integer number (497016).

Almost surely, 2^5781081 is an apocalyptic number.

It is an amenable number.

5781081 is a deficient number, since it is larger than the sum of its proper divisors (2171175).

5781081 is a wasteful number, since it uses less digits than its factorization.

5781081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512.

The product of its (nonzero) digits is 2240, while the sum is 30.

The square root of 5781081 is about 2404.3878638855. The cubic root of 5781081 is about 179.4746099412.

The spelling of 5781081 in words is "five million, seven hundred eighty-one thousand, eighty-one".