5550006521 has 2 divisors, whose sum is σ = 5550006522. Its totient is φ = 5550006520.

The previous prime is 5550006491. The next prime is 5550006529. The reversal of 5550006521 is 1256000555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3137232121 + 2412774400 = 56011^2 + 49120^2 .

It is a cyclic number.

It is not a de Polignac number, because 5550006521 - 2¹⁸ = 5549744377 is a prime.

It is not a weakly prime, because it can be changed into another prime (5550006529) 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, 2775003260 + 2775003261.

It is an arithmetic number, because the mean of its divisors is an integer number (2775003261).

Almost surely, 2^5550006521 is an apocalyptic number.

It is an amenable number.

5550006521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5550006521 is an equidigital number, since it uses as much as digits as its factorization.

5550006521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 5550006521 is about 74498.3658948302. The cubic root of 5550006521 is about 1770.5077459563.

The spelling of 5550006521 in words is "five billion, five hundred fifty million, six thousand, five hundred twenty-one".