5255435221 has 2 divisors, whose sum is σ = 5255435222. Its totient is φ = 5255435220.

The previous prime is 5255435203. The next prime is 5255435231. The reversal of 5255435221 is 1225345525.

5255435221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4890204900 + 365230321 = 69930^2 + 19111^2 .

It is a cyclic number.

It is not a de Polignac number, because 5255435221 - 2¹¹ = 5255433173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5255435201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2627717610 + 2627717611.

It is an arithmetic number, because the mean of its divisors is an integer number (2627717611).

Almost surely, 2^5255435221 is an apocalyptic number.

It is an amenable number.

5255435221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5255435221 is an equidigital number, since it uses as much as digits as its factorization.

5255435221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60000, while the sum is 34.

The square root of 5255435221 is about 72494.3806167071. The cubic root of 5255435221 is about 1738.6128925043.

The spelling of 5255435221 in words is "five billion, two hundred fifty-five million, four hundred thirty-five thousand, two hundred twenty-one".