555555555550 has 24 divisors (see below), whose sum is σ = 1033383078000. Its totient is φ = 222211524480.

The previous prime is 555555555413. The next prime is 555555555551. The reversal of 555555555550 is 55555555555.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 555555555491 and 555555555500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555555555551) 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 11 ways as a sum of consecutive naturals, for example, 825831 + ... + 1339069.

It is an arithmetic number, because the mean of its divisors is an integer number (43057628250).

Almost surely, 2^555555555550 is an apocalyptic number.

555555555550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

555555555550 is a deficient number, since it is larger than the sum of its proper divisors (477827522450).

555555555550 is a wasteful number, since it uses less digits than its factorization.

555555555550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534900 (or 534895 counting only the distinct ones).

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

It can be divided in two parts, 5 and 55555555550, that added together give a palindrome (55555555555).

The spelling of 555555555550 in words is "five hundred fifty-five billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty".