| Base | Representation |
|---|---|
| bin | 100000110010000… |
| … | …101010110000000 |
| 3 | 1102022220220011101 |
| 4 | 200302011112000 |
| 5 | 2111300000000 |
| 6 | 130324224144 |
| 7 | 16425631354 |
| oct | 4062052600 |
| 9 | 1368826141 |
| 10 | 550000000 |
| 11 | 262508160 |
| 12 | 13423b054 |
| 13 | 89c404b4 |
| 14 | 5308d464 |
| 15 | 33442e6a |
| hex | 20c85580 |
550000000 has 144 divisors (see below), whose sum is σ = 1494139860. Its totient is φ = 200000000.
The previous prime is 549999959. The next prime is 550000001. The reversal of 550000000 is 55.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a nialpdrome in base 10.
It is a zygodrome in base 10.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (550000001) by changing a digit.
It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 49999995 + ... + 50000005.
Almost surely, 2550000000 is an apocalyptic number.
550000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 550000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (747069930).
550000000 is an abundant number, since it is smaller than the sum of its proper divisors (944139860).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
550000000 is an frugal number, since it uses more digits than its factorization.
550000000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 65 (or 18 counting only the distinct ones).
The product of its (nonzero) digits is 25, while the sum is 10.
The square root of 550000000 is about 23452.0787991171. The cubic root of 550000000 is about 819.3212706006.
Adding to 550000000 its reverse (55), we get a palindrome (550000055).
Subtracting from 550000000 its reverse (55), we obtain a palindrome (549999945).
550000000 divided by its reverse (55) gives a 7-th power (10000000 = 107).
It can be divided in two parts, 5 and 50000000, that added together give a palindrome (50000005).
The spelling of 550000000 in words is "five hundred fifty million", and thus it is an aban number.
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