52221913813 has 2 divisors, whose sum is σ = 52221913814. Its totient is φ = 52221913812.

The previous prime is 52221913771. The next prime is 52221913871. The reversal of 52221913813 is 31831912225.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49209879889 + 3012033924 = 221833^2 + 54882^2 .

It is a cyclic number.

It is not a de Polignac number, because 52221913813 - 2¹³ = 52221905621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52221913613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26110956906 + 26110956907.

It is an arithmetic number, because the mean of its divisors is an integer number (26110956907).

Almost surely, 2^52221913813 is an apocalyptic number.

It is an amenable number.

52221913813 is a deficient number, since it is larger than the sum of its proper divisors (1).

52221913813 is an equidigital number, since it uses as much as digits as its factorization.

52221913813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The spelling of 52221913813 in words is "fifty-two billion, two hundred twenty-one million, nine hundred thirteen thousand, eight hundred thirteen".