551744 has 28 divisors (see below), whose sum is σ = 1129284. Its totient is φ = 267264.

The previous prime is 551743. The next prime is 551753. The reversal of 551744 is 447155.

It can be written as a sum of positive squares in 2 ways, for example, as 313600 + 238144 = 560^2 + 488^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551744.

It is not an unprimeable number, because it can be changed into a prime (551743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2252 + ... + 2484.

2⁵⁵¹⁷⁴⁴ 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 551744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (564642).

551744 is an abundant number, since it is smaller than the sum of its proper divisors (577540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551744 is a wasteful number, since it uses less digits than its factorization.

551744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 272 counting only the distinct ones).

The product of its digits is 2800, while the sum is 26.

The square root of 551744 is about 742.7947226522. The cubic root of 551744 is about 82.0186354631.

Adding to 551744 its reverse (447155), we get a palindrome (998899).

The spelling of 551744 in words is "five hundred fifty-one thousand, seven hundred forty-four".