5550472721 has 2 divisors, whose sum is σ = 5550472722. Its totient is φ = 5550472720.

The previous prime is 5550472699. The next prime is 5550472727. The reversal of 5550472721 is 1272740555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3280998400 + 2269474321 = 57280^2 + 47639^2 .

It is a cyclic number.

It is not a de Polignac number, because 5550472721 - 2⁶ = 5550472657 is a prime.

It is not a weakly prime, because it can be changed into another prime (5550472727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775236360 + 2775236361.

It is an arithmetic number, because the mean of its divisors is an integer number (2775236361).

Almost surely, 2^5550472721 is an apocalyptic number.

It is an amenable number.

5550472721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5550472721 is an equidigital number, since it uses as much as digits as its factorization.

5550472721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98000, while the sum is 38.

The square root of 5550472721 is about 74501.4947568168. The cubic root of 5550472721 is about 1770.5573187269.

The spelling of 5550472721 in words is "five billion, five hundred fifty million, four hundred seventy-two thousand, seven hundred twenty-one".