5249813 has 2 divisors, whose sum is σ = 5249814. Its totient is φ = 5249812.

The previous prime is 5249801. The next prime is 5249831. The reversal of 5249813 is 3189425.

Together with next prime (5249831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4831204 + 418609 = 2198^2 + 647^2 .

It is a cyclic number.

It is not a de Polignac number, because 5249813 - 2⁸ = 5249557 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5249813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5249873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2624906 + 2624907.

It is an arithmetic number, because the mean of its divisors is an integer number (2624907).

Almost surely, 2^5249813 is an apocalyptic number.

It is an amenable number.

5249813 is a deficient number, since it is larger than the sum of its proper divisors (1).

5249813 is an equidigital number, since it uses as much as digits as its factorization.

5249813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 5249813 is about 2291.2470403691. The cubic root of 5249813 is about 173.7992686738.

The spelling of 5249813 in words is "five million, two hundred forty-nine thousand, eight hundred thirteen".