5643713221 has 2 divisors, whose sum is σ = 5643713222. Its totient is φ = 5643713220.

The previous prime is 5643713209. The next prime is 5643713269. The reversal of 5643713221 is 1223173465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5642112996 + 1600225 = 75114^2 + 1265^2 .

It is a cyclic number.

It is not a de Polignac number, because 5643713221 - 2¹¹ = 5643711173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5643713291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821856610 + 2821856611.

It is an arithmetic number, because the mean of its divisors is an integer number (2821856611).

Almost surely, 2^5643713221 is an apocalyptic number.

It is an amenable number.

5643713221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5643713221 is an equidigital number, since it uses as much as digits as its factorization.

5643713221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 5643713221 is about 75124.6512204882. The cubic root of 5643713221 is about 1780.4166449881.

Adding to 5643713221 its reverse (1223173465), we get a palindrome (6866886686).

The spelling of 5643713221 in words is "five billion, six hundred forty-three million, seven hundred thirteen thousand, two hundred twenty-one".