5256813 has 4 divisors (see below), whose sum is σ = 7009088. Its totient is φ = 3504540.

The previous prime is 5256781. The next prime is 5256817. The reversal of 5256813 is 3186525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5256813 - 2⁵ = 5256781 is a prime.

It is a D-number.

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 (5256817) 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 3 ways as a sum of consecutive naturals, for example, 876133 + ... + 876138.

It is an arithmetic number, because the mean of its divisors is an integer number (1752272).

Almost surely, 2^5256813 is an apocalyptic number.

It is an amenable number.

5256813 is a deficient number, since it is larger than the sum of its proper divisors (1752275).

5256813 is a wasteful number, since it uses less digits than its factorization.

5256813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752274.

The product of its digits is 7200, while the sum is 30.

The square root of 5256813 is about 2292.7740839429. The cubic root of 5256813 is about 173.8764812370.

It can be divided in two parts, 52 and 56813, that added together give a palindrome (56865).

The spelling of 5256813 in words is "five million, two hundred fifty-six thousand, eight hundred thirteen".