6650030521 has 2 divisors, whose sum is σ = 6650030522. Its totient is φ = 6650030520.

The previous prime is 6650030393. The next prime is 6650030567. The reversal of 6650030521 is 1250300566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4049540496 + 2600490025 = 63636^2 + 50995^2 .

It is a cyclic number.

It is not a de Polignac number, because 6650030521 - 2⁷ = 6650030393 is a prime.

It is a super-3 number, since 3×6650030521³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6650030521.

It is not a weakly prime, because it can be changed into another prime (6650030221) 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, 3325015260 + 3325015261.

It is an arithmetic number, because the mean of its divisors is an integer number (3325015261).

Almost surely, 2^6650030521 is an apocalyptic number.

It is an amenable number.

6650030521 is a deficient number, since it is larger than the sum of its proper divisors (1).

6650030521 is an equidigital number, since it uses as much as digits as its factorization.

6650030521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 6650030521 is about 81547.7192875435. The cubic root of 6650030521 is about 1880.5052324964.

The spelling of 6650030521 in words is "six billion, six hundred fifty million, thirty thousand, five hundred twenty-one".