550955609421 has 24 divisors (see below), whose sum is σ = 870666866784. Its totient is φ = 308891550240.

The previous prime is 550955609401. The next prime is 550955609467. The reversal of 550955609421 is 124906559055.

It is a happy number.

It is not a de Polignac number, because 550955609421 - 2⁶ = 550955609357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550955609401) 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 in 23 ways as a sum of consecutive naturals, for example, 35350675 + ... + 35366256.

It is an arithmetic number, because the mean of its divisors is an integer number (36277786116).

Almost surely, 2^550955609421 is an apocalyptic number.

It is an amenable number.

550955609421 is a deficient number, since it is larger than the sum of its proper divisors (319711257363).

550955609421 is a wasteful number, since it uses less digits than its factorization.

550955609421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70717001 (or 70716994 counting only the distinct ones).

The product of its (nonzero) digits is 2430000, while the sum is 51.

The spelling of 550955609421 in words is "five hundred fifty billion, nine hundred fifty-five million, six hundred nine thousand, four hundred twenty-one".