5256817 has 2 divisors, whose sum is σ = 5256818. Its totient is φ = 5256816.

The previous prime is 5256781. The next prime is 5256821. The reversal of 5256817 is 7186525.

Together with previous prime (5256781) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5089536 + 167281 = 2256^2 + 409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5256817 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (5256847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2628408 + 2628409.

It is an arithmetic number, because the mean of its divisors is an integer number (2628409).

Almost surely, 2^5256817 is an apocalyptic number.

It is an amenable number.

5256817 is a deficient number, since it is larger than the sum of its proper divisors (1).

5256817 is an equidigital number, since it uses as much as digits as its factorization.

5256817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 34.

The square root of 5256817 is about 2292.7749562484. The cubic root of 5256817 is about 173.8765253388.

The spelling of 5256817 in words is "five million, two hundred fifty-six thousand, eight hundred seventeen".