5555555505550 has 12 divisors (see below), whose sum is σ = 10333333240416. Its totient is φ = 2222222202200.

The previous prime is 5555555505541. The next prime is 5555555505557. The reversal of 5555555505550 is 555055555555.

It is a junction number, because it is equal to n+sod(n) for n = 5555555505491 and 5555555505500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555555505557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55555555006 + ... + 55555555105.

It is an arithmetic number, because the mean of its divisors is an integer number (861111103368).

Almost surely, 2^{5555555505550} is an apocalyptic number.

5555555505550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5555555505550 is a deficient number, since it is larger than the sum of its proper divisors (4777777734866).

5555555505550 is a wasteful number, since it uses less digits than its factorization.

5555555505550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111111110123 (or 111111110118 counting only the distinct ones).

The product of its (nonzero) digits is 48828125, while the sum is 55.

The spelling of 5555555505550 in words is "five trillion, five hundred fifty-five billion, five hundred fifty-five million, five hundred five thousand, five hundred fifty".