5808721 has 4 divisors (see below), whose sum is σ = 5839012. Its totient is φ = 5778432.

The previous prime is 5808707. The next prime is 5808731. The reversal of 5808721 is 1278085.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1278085 = 5 ⋅255617.

It can be written as a sum of positive squares in 2 ways, for example, as 541696 + 5267025 = 736^2 + 2295^2 .

It is a cyclic number.

It is not a de Polignac number, because 5808721 - 2⁵ = 5808689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5808701) 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, 14856 + ... + 15241.

It is an arithmetic number, because the mean of its divisors is an integer number (1459753).

Almost surely, 2^5808721 is an apocalyptic number.

It is an amenable number.

5808721 is a deficient number, since it is larger than the sum of its proper divisors (30291).

5808721 is a wasteful number, since it uses less digits than its factorization.

5808721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30290.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 5808721 is about 2410.1288347306. The cubic root of 5808721 is about 179.7601847496.

The spelling of 5808721 in words is "five million, eight hundred eight thousand, seven hundred twenty-one".