550621069 has 2 divisors, whose sum is σ = 550621070. Its totient is φ = 550621068.

The previous prime is 550621067. The next prime is 550621079. The reversal of 550621069 is 960126055.

It is a happy number.

550621069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 405539044 + 145082025 = 20138^2 + 12045^2 .

It is a cyclic number.

It is not a de Polignac number, because 550621069 - 2¹ = 550621067 is a prime.

It is a super-2 number, since 2×550621069² = 606367123253405522, which contains 22 as substring.

Together with 550621067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550621067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275310534 + 275310535.

It is an arithmetic number, because the mean of its divisors is an integer number (275310535).

Almost surely, 2^550621069 is an apocalyptic number.

It is an amenable number.

550621069 is a deficient number, since it is larger than the sum of its proper divisors (1).

550621069 is an equidigital number, since it uses as much as digits as its factorization.

550621069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 550621069 is about 23465.3162987419. The cubic root of 550621069 is about 819.6295515864.

The spelling of 550621069 in words is "five hundred fifty million, six hundred twenty-one thousand, sixty-nine".