5218805 has 4 divisors (see below), whose sum is σ = 6262572. Its totient is φ = 4175040.

The previous prime is 5218793. The next prime is 5218817. The reversal of 5218805 is 5088125.

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

It is an interprime number because it is at equal distance from previous prime (5218793) and next prime (5218817).

It can be written as a sum of positive squares in 2 ways, for example, as 1540081 + 3678724 = 1241^2 + 1918^2 .

It is not a de Polignac number, because 5218805 - 2¹⁰ = 5217781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521876 + ... + 521885.

It is an arithmetic number, because the mean of its divisors is an integer number (1565643).

Almost surely, 2^5218805 is an apocalyptic number.

It is an amenable number.

5218805 is a deficient number, since it is larger than the sum of its proper divisors (1043767).

5218805 is a wasteful number, since it uses less digits than its factorization.

5218805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043766.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 5218805 is about 2284.4703981448. The cubic root of 5218805 is about 173.4564111890.

The spelling of 5218805 in words is "five million, two hundred eighteen thousand, eight hundred five".