5257709 has 4 divisors (see below), whose sum is σ = 5567004. Its totient is φ = 4948416.

The previous prime is 5257627. The next prime is 5257711. The reversal of 5257709 is 9077525.

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 2316484 + 2941225 = 1522^2 + 1715^2 .

It is a cyclic number.

It is not a de Polignac number, because 5257709 - 2⁸ = 5257453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5257789) 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, 154622 + ... + 154655.

It is an arithmetic number, because the mean of its divisors is an integer number (1391751).

Almost surely, 2^5257709 is an apocalyptic number.

It is an amenable number.

5257709 is a deficient number, since it is larger than the sum of its proper divisors (309295).

5257709 is a wasteful number, since it uses less digits than its factorization.

5257709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309294.

The product of its (nonzero) digits is 22050, while the sum is 35.

The square root of 5257709 is about 2292.9694721038. The cubic root of 5257709 is about 173.8863594957.

The spelling of 5257709 in words is "five million, two hundred fifty-seven thousand, seven hundred nine".