550004813 has 2 divisors, whose sum is σ = 550004814. Its totient is φ = 550004812.

The previous prime is 550004803. The next prime is 550004867. The reversal of 550004813 is 318400055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 520432969 + 29571844 = 22813^2 + 5438^2 .

It is a cyclic number.

It is not a de Polignac number, because 550004813 - 2²² = 545810509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550004803) 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, 275002406 + 275002407.

It is an arithmetic number, because the mean of its divisors is an integer number (275002407).

Almost surely, 2^550004813 is an apocalyptic number.

It is an amenable number.

550004813 is a deficient number, since it is larger than the sum of its proper divisors (1).

550004813 is an equidigital number, since it uses as much as digits as its factorization.

550004813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 550004813 is about 23452.1814123974. The cubic root of 550004813 is about 819.3236605290.

Adding to 550004813 its reverse (318400055), we get a palindrome (868404868).

The spelling of 550004813 in words is "five hundred fifty million, four thousand, eight hundred thirteen".