550005555550 has 24 divisors (see below), whose sum is σ = 1116011273832. Its totient is φ = 200002020000.

The previous prime is 550005555479. The next prime is 550005555557. The reversal of 550005555550 is 55555500055.

It is a super-2 number, since 2×550005555550² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550005555557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 500004501 + ... + 500005600.

It is an arithmetic number, because the mean of its divisors is an integer number (46500469743).

Almost surely, 2^550005555550 is an apocalyptic number.

550005555550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

550005555550 is an abundant number, since it is smaller than the sum of its proper divisors (566005718282).

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

550005555550 is a wasteful number, since it uses less digits than its factorization.

550005555550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000010124 (or 1000010119 counting only the distinct ones).

The product of its (nonzero) digits is 390625, while the sum is 40.

The spelling of 550005555550 in words is "five hundred fifty billion, five million, five hundred fifty-five thousand, five hundred fifty".