553955220 is a `hidden beast` number, since 55 + 39 + 552 + 20 = 666.
It is a congruent number.
It is an unprimeable number.
Almost surely, 2553955220 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 553955220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1060657920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
553955220 is a wasteful number, since it uses less digits than its factorization.
553955220 is an evil number, because the sum of its binary digits is even.
The square root of 553955220 is about 23536.2533127089. The cubic root of 553955220 is about 821.2805789160.
The spelling of 553955220 in words is "five hundred fifty-three million, nine hundred fifty-five thousand, two hundred twenty".