Adding to 551124 its reverse (421155), we get a palindrome (972279).
It is a congruent number.
2551124 is an apocalyptic number.
551124 is a gapful number since it is divisible by the number (54) 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 551124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (826672).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
551124 is an frugal number, since it uses more digits than its factorization.
551124 is an evil number, because the sum of its binary digits is even.
The square root of 551124 is about 742.3772625828. The cubic root of 551124 is about 81.9879022406.
The spelling of 551124 in words is "five hundred fifty-one thousand, one hundred twenty-four".