5208267221 has 2 divisors, whose sum is σ = 5208267222. Its totient is φ = 5208267220.

The previous prime is 5208267173. The next prime is 5208267227. The reversal of 5208267221 is 1227628025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4583967025 + 624300196 = 67705^2 + 24986^2 .

It is a cyclic number.

It is not a de Polignac number, because 5208267221 - 2⁶ = 5208267157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5208267227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2604133610 + 2604133611.

It is an arithmetic number, because the mean of its divisors is an integer number (2604133611).

Almost surely, 2^5208267221 is an apocalyptic number.

It is an amenable number.

5208267221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5208267221 is an equidigital number, since it uses as much as digits as its factorization.

5208267221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 5208267221 is about 72168.3256075683. The cubic root of 5208267221 is about 1733.3958514885.

The spelling of 5208267221 in words is "five billion, two hundred eight million, two hundred sixty-seven thousand, two hundred twenty-one".