52499813 has 2 divisors, whose sum is σ = 52499814. Its totient is φ = 52499812.

The previous prime is 52499809. The next prime is 52499819. The reversal of 52499813 is 31899425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27269284 + 25230529 = 5222^2 + 5023^2 .

It is a cyclic number.

It is not a de Polignac number, because 52499813 - 2² = 52499809 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52499819) 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 as a sum of consecutive naturals, namely, 26249906 + 26249907.

It is an arithmetic number, because the mean of its divisors is an integer number (26249907).

Almost surely, 2^52499813 is an apocalyptic number.

It is an amenable number.

52499813 is a deficient number, since it is larger than the sum of its proper divisors (1).

52499813 is an equidigital number, since it uses as much as digits as its factorization.

52499813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 52499813 is about 7245.6754688573. The cubic root of 52499813 is about 374.4431747829.

The spelling of 52499813 in words is "fifty-two million, four hundred ninety-nine thousand, eight hundred thirteen".