52055221 has 2 divisors, whose sum is σ = 52055222. Its totient is φ = 52055220.

The previous prime is 52055219. The next prime is 52055249. The reversal of 52055221 is 12255025.

52055221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38812900 + 13242321 = 6230^2 + 3639^2 .

It is a cyclic number.

It is not a de Polignac number, because 52055221 - 2¹ = 52055219 is a prime.

Together with 52055219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 52055192 and 52055201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52055291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26027610 + 26027611.

It is an arithmetic number, because the mean of its divisors is an integer number (26027611).

Almost surely, 2^52055221 is an apocalyptic number.

It is an amenable number.

52055221 is a deficient number, since it is larger than the sum of its proper divisors (1).

52055221 is an equidigital number, since it uses as much as digits as its factorization.

52055221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 52055221 is about 7214.9304223949. The cubic root of 52055221 is about 373.3831926571.

The spelling of 52055221 in words is "fifty-two million, fifty-five thousand, two hundred twenty-one".