555555055550 has 48 divisors (see below), whose sum is σ = 1193581833552. Its totient is φ = 190136486400.

The previous prime is 555555055541. The next prime is 555555055553. The reversal of 555555055550 is 55550555555.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555555055553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29699477 + ... + 29718176.

It is an arithmetic number, because the mean of its divisors is an integer number (24866288199).

Almost surely, 2^555555055550 is an apocalyptic number.

555555055550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

555555055550 is an abundant number, since it is smaller than the sum of its proper divisors (638026778002).

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

555555055550 is a wasteful number, since it uses less digits than its factorization.

555555055550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59417693 (or 59417688 counting only the distinct ones).

The product of its (nonzero) digits is 9765625, while the sum is 50.

It can be divided in two parts, 5 and 55555055550, that added together give a palindrome (55555055555).

The spelling of 555555055550 in words is "five hundred fifty-five billion, five hundred fifty-five million, fifty-five thousand, five hundred fifty".