5406203221 has 2 divisors, whose sum is σ = 5406203222. Its totient is φ = 5406203220.

The previous prime is 5406203191. The next prime is 5406203279. The reversal of 5406203221 is 1223026045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4575034321 + 831168900 = 67639^2 + 28830^2 .

It is a cyclic number.

It is not a de Polignac number, because 5406203221 - 2⁵ = 5406203189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5406233221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2703101610 + 2703101611.

It is an arithmetic number, because the mean of its divisors is an integer number (2703101611).

Almost surely, 2^5406203221 is an apocalyptic number.

It is an amenable number.

5406203221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5406203221 is an equidigital number, since it uses as much as digits as its factorization.

5406203221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 5406203221 is about 73526.8877418322. The cubic root of 5406203221 is about 1755.0821757881.

Adding to 5406203221 its reverse (1223026045), we get a palindrome (6629229266).

The spelling of 5406203221 in words is "five billion, four hundred six million, two hundred three thousand, two hundred twenty-one".