It is a tau number, because it is divible by the number of its divisors (162).
It is a nialpdrome in base 6 and base 12.
It is an unprimeable number.
21555200 is an apocalyptic number.
1555200 is a gapful number since it is divisible by the number (10) 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 1555200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2883062).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1555200 is an frugal number, since it uses more digits than its factorization.
1555200 is an evil number, because the sum of its binary digits is even.
The square root of 1555200 is about 1247.0765814496. The cubic root of 1555200 is about 115.8587261527.
The spelling of 1555200 in words is "one million, five hundred fifty-five thousand, two hundred".