550505050550 has 144 divisors (see below), whose sum is σ = 1285965942912. Its totient is φ = 173787264000.

The previous prime is 550505050549. The next prime is 550505050553. The reversal of 550505050550 is 55050505055.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 550505050550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550505050553) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 12750299 + ... + 12793401.

It is an arithmetic number, because the mean of its divisors is an integer number (8930319048).

Almost surely, 2^550505050550 is an apocalyptic number.

550505050550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

550505050550 is an abundant number, since it is smaller than the sum of its proper divisors (735460892362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

550505050550 is a wasteful number, since it uses less digits than its factorization.

550505050550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43543 (or 43531 counting only the distinct ones).

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

The spelling of 550505050550 in words is "five hundred fifty billion, five hundred five million, fifty thousand, five hundred fifty".