50005555550 has 24 divisors (see below), whose sum is σ = 93069834816. Its totient is φ = 19989426240.

The previous prime is 50005555549. The next prime is 50005555637. The reversal of 50005555550 is 5555550005.

It is a self number, because there is not a number n which added to its sum of digits gives 50005555550.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 240767 + ... + 397466.

It is an arithmetic number, because the mean of its divisors is an integer number (3877909784).

Almost surely, 2^50005555550 is an apocalyptic number.

50005555550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

50005555550 is a deficient number, since it is larger than the sum of its proper divisors (43064279266).

50005555550 is a wasteful number, since it uses less digits than its factorization.

50005555550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639812 (or 639807 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 35.

The spelling of 50005555550 in words is "fifty billion, five million, five hundred fifty-five thousand, five hundred fifty".