It is a happy number.
It is a congruent number.
Almost surely, 255005552 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 55005552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88730928).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
55005552 is a wasteful number, since it uses less digits than its factorization.
55005552 is an evil number, because the sum of its binary digits is even.
The square root of 55005552 is about 7416.5727934134. The cubic root of 55005552 is about 380.3080420044.
The spelling of 55005552 in words is "fifty-five million, five thousand, five hundred fifty-two".