5281805 has 4 divisors (see below), whose sum is σ = 6338172. Its totient is φ = 4225440.

The previous prime is 5281763. The next prime is 5281817. The reversal of 5281805 is 5081825.

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 1510441 + 3771364 = 1229^2 + 1942^2 .

It is not a de Polignac number, because 5281805 - 2¹² = 5277709 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, 528176 + ... + 528185.

It is an arithmetic number, because the mean of its divisors is an integer number (1584543).

Almost surely, 2^5281805 is an apocalyptic number.

It is an amenable number.

5281805 is a deficient number, since it is larger than the sum of its proper divisors (1056367).

5281805 is a wasteful number, since it uses less digits than its factorization.

5281805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056366.

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

The square root of 5281805 is about 2298.2177877651. The cubic root of 5281805 is about 174.1515942279.

The spelling of 5281805 in words is "five million, two hundred eighty-one thousand, eight hundred five".