551124 has 60 divisors (see below), whose sum is σ = 1653344. Its totient is φ = 157464.

The previous prime is 551113. The next prime is 551129. The reversal of 551124 is 421155.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 551097 and 551106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551129) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 78729 + ... + 78735.

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).

551124 is an abundant number, since it is smaller than the sum of its proper divisors (1102220).

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 sum of its prime factors is 38 (or 12 counting only the distinct ones).

The product of its digits is 200, while the sum is 18.

The square root of 551124 is about 742.3772625828. The cubic root of 551124 is about 81.9879022406.

Adding to 551124 its reverse (421155), we get a palindrome (972279).

The spelling of 551124 in words is "five hundred fifty-one thousand, one hundred twenty-four".