Adding to 55000000 its reverse (55), we get a palindrome (55000055).
Subtracting from 55000000 its reverse (55), we obtain a palindrome (54999945).
Multipling 55000000 by its reverse (55), we get a square (3025000000 = 550002).
55000000 divided by its reverse (55) gives a 6-th power (1000000 = 106).
55000000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
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 an unprimeable number.
Almost surely, 255000000 is an apocalyptic number.
55000000 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 55000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74413872).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
55000000 is an frugal number, since it uses more digits than its factorization.
55000000 is an odious number, because the sum of its binary digits is odd.
The square root of 55000000 is about 7416.1984870957. The cubic root of 55000000 is about 380.2952460761.