5257809 has 12 divisors (see below), whose sum is σ = 7614516. Its totient is φ = 3496032.

The previous prime is 5257807. The next prime is 5257829. The reversal of 5257809 is 9087525.

It can be written as a sum of positive squares in 2 ways, for example, as 4161600 + 1096209 = 2040^2 + 1047^2 .

It is not a de Polignac number, because 5257809 - 2¹ = 5257807 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5257807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6199 + ... + 6995.

It is an arithmetic number, because the mean of its divisors is an integer number (634543).

Almost surely, 2^5257809 is an apocalyptic number.

It is an amenable number.

5257809 is a deficient number, since it is larger than the sum of its proper divisors (2356707).

5257809 is a wasteful number, since it uses less digits than its factorization.

5257809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536 (or 1533 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 5257809 is about 2292.9912777854. The cubic root of 5257809 is about 173.8874619103.

The spelling of 5257809 in words is "five million, two hundred fifty-seven thousand, eight hundred nine".