5320451221 has 2 divisors, whose sum is σ = 5320451222. Its totient is φ = 5320451220.

The previous prime is 5320451177. The next prime is 5320451233. The reversal of 5320451221 is 1221540235.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5157250596 + 163200625 = 71814^2 + 12775^2 .

It is a cyclic number.

It is not a de Polignac number, because 5320451221 - 2²⁵ = 5286896789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5320451921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2660225610 + 2660225611.

It is an arithmetic number, because the mean of its divisors is an integer number (2660225611).

Almost surely, 2^5320451221 is an apocalyptic number.

It is an amenable number.

5320451221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5320451221 is an equidigital number, since it uses as much as digits as its factorization.

5320451221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 5320451221 is about 72941.4232175381. The cubic root of 5320451221 is about 1745.7531001651.

Adding to 5320451221 its reverse (1221540235), we get a palindrome (6541991456).

The spelling of 5320451221 in words is "five billion, three hundred twenty million, four hundred fifty-one thousand, two hundred twenty-one".