551772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an Ulam number.
It is a zygodrome in base 7.
It is a congruent number.
2551772 is an apocalyptic number.
551772 is a gapful number since it is divisible by the number (52) 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 551772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (782628).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
551772 is a wasteful number, since it uses less digits than its factorization.
551772 is an evil number, because the sum of its binary digits is even.
The square root of 551772 is about 742.8135701507. The cubic root of 551772 is about 82.0200228716.
The spelling of 551772 in words is "five hundred fifty-one thousand, seven hundred seventy-two".