5516640221 has 2 divisors, whose sum is σ = 5516640222. Its totient is φ = 5516640220.

The previous prime is 5516640211. The next prime is 5516640263. The reversal of 5516640221 is 1220466155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3947608900 + 1569031321 = 62830^2 + 39611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5516640221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5516640211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2758320110 + 2758320111.

It is an arithmetic number, because the mean of its divisors is an integer number (2758320111).

Almost surely, 2^5516640221 is an apocalyptic number.

It is an amenable number.

5516640221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5516640221 is an equidigital number, since it uses as much as digits as its factorization.

5516640221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 5516640221 is about 74274.0884898630. The cubic root of 5516640221 is about 1766.9525504168.

The spelling of 5516640221 in words is "five billion, five hundred sixteen million, six hundred forty thousand, two hundred twenty-one".