5808821 has 4 divisors (see below), whose sum is σ = 5842572. Its totient is φ = 5775072.

The previous prime is 5808809. The next prime is 5808841. The reversal of 5808821 is 1288085.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4778596 + 1030225 = 2186^2 + 1015^2 .

It is a cyclic number.

It is not a de Polignac number, because 5808821 - 2¹⁰ = 5807797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5808841) 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, 16616 + ... + 16961.

It is an arithmetic number, because the mean of its divisors is an integer number (1460643).

Almost surely, 2^5808821 is an apocalyptic number.

It is an amenable number.

5808821 is a deficient number, since it is larger than the sum of its proper divisors (33751).

5808821 is a wasteful number, since it uses less digits than its factorization.

5808821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33750.

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 5808821 is about 2410.1495804203. The cubic root of 5808821 is about 179.7612162971.

The spelling of 5808821 in words is "five million, eight hundred eight thousand, eight hundred twenty-one".