5109805 has 4 divisors (see below), whose sum is σ = 6131772. Its totient is φ = 4087840.

The previous prime is 5109791. The next prime is 5109821. The reversal of 5109805 is 5089015.

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 2019241 + 3090564 = 1421^2 + 1758^2 .

It is not a de Polignac number, because 5109805 - 2⁵ = 5109773 is a prime.

It is a super-2 number, since 2×5109805² = 52220214276050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510976 + ... + 510985.

It is an arithmetic number, because the mean of its divisors is an integer number (1532943).

Almost surely, 2^5109805 is an apocalyptic number.

It is an amenable number.

5109805 is a deficient number, since it is larger than the sum of its proper divisors (1021967).

5109805 is a wasteful number, since it uses less digits than its factorization.

5109805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021966.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 5109805 is about 2260.4877792193. The cubic root of 5109805 is about 172.2403009503.

The spelling of 5109805 in words is "five million, one hundred nine thousand, eight hundred five".