550555055550 has 36 divisors (see below), whose sum is σ = 1479157917120. Its totient is φ = 146814681360.

The previous prime is 550555055537. The next prime is 550555055569. The reversal of 550555055550 is 55550555055.

It is a super-2 number, since 2×550555055550² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 550555055496 and 550555055505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 611727390 + ... + 611728289.

It is an arithmetic number, because the mean of its divisors is an integer number (41087719920).

Almost surely, 2^550555055550 is an apocalyptic number.

550555055550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

550555055550 is an abundant number, since it is smaller than the sum of its proper divisors (928602861570).

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

550555055550 is a wasteful number, since it uses less digits than its factorization.

550555055550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223455697 (or 1223455689 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

The spelling of 550555055550 in words is "five hundred fifty billion, five hundred fifty-five million, fifty-five thousand, five hundred fifty".