5639081 has 4 divisors (see below), whose sum is σ = 6444672. Its totient is φ = 4833492.

The previous prime is 5639069. The next prime is 5639083. The reversal of 5639081 is 1809365.

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: 1809365 = 5 ⋅361873.

It is a cyclic number.

It is not a de Polignac number, because 5639081 - 2¹⁰ = 5638057 is a prime.

It is a super-2 number, since 2×5639081² = 63598469049122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5639083) 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 3 ways as a sum of consecutive naturals, for example, 402785 + ... + 402798.

It is an arithmetic number, because the mean of its divisors is an integer number (1611168).

Almost surely, 2^5639081 is an apocalyptic number.

It is an amenable number.

5639081 is a deficient number, since it is larger than the sum of its proper divisors (805591).

5639081 is an equidigital number, since it uses as much as digits as its factorization.

5639081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805590.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 5639081 is about 2374.6749251213. The cubic root of 5639081 is about 177.9929404262.

The spelling of 5639081 in words is "five million, six hundred thirty-nine thousand, eighty-one".