5256689 has 8 divisors (see below), whose sum is σ = 5587560. Its totient is φ = 4928256.

The previous prime is 5256683. The next prime is 5256697. The reversal of 5256689 is 9866525.

It can be written as a sum of positive squares in 4 ways, for example, as 1677025 + 3579664 = 1295^2 + 1892^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5256689 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5256683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5927 + ... + 6755.

It is an arithmetic number, because the mean of its divisors is an integer number (698445).

Almost surely, 2^5256689 is an apocalyptic number.

It is an amenable number.

5256689 is a deficient number, since it is larger than the sum of its proper divisors (330871).

5256689 is a wasteful number, since it uses less digits than its factorization.

5256689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219.

The product of its digits is 129600, while the sum is 41.

The square root of 5256689 is about 2292.7470423054. The cubic root of 5256689 is about 173.8751140681.

The spelling of 5256689 in words is "five million, two hundred fifty-six thousand, six hundred eighty-nine".