550720 has 28 divisors (see below), whose sum is σ = 1312164. Its totient is φ = 220160.

The previous prime is 550717. The next prime is 550721. The reversal of 550720 is 27055.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 304704 + 246016 = 552^2 + 496^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550721) 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, 541 + ... + 1180.

It is an arithmetic number, because the mean of its divisors is an integer number (46863).

2⁵⁵⁰⁷²⁰ is an apocalyptic number.

It is an amenable number.

550720 is an abundant number, since it is smaller than the sum of its proper divisors (761444).

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

550720 is a wasteful number, since it uses less digits than its factorization.

550720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738 (or 1728 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 550720 is about 742.1051138484. The cubic root of 550720 is about 81.9678636713.

Adding to 550720 its reverse (27055), we get a palindrome (577775).

The spelling of 550720 in words is "five hundred fifty thousand, seven hundred twenty".