550723 has 4 divisors (see below), whose sum is σ = 561168. Its totient is φ = 540280.

The previous prime is 550721. The next prime is 550733. The reversal of 550723 is 327055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 550723 - 2¹ = 550721 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 550694 and 550703.

It is not an unprimeable number, because it can be changed into a prime (550721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5143 + ... + 5248.

It is an arithmetic number, because the mean of its divisors is an integer number (140292).

2⁵⁵⁰⁷²³ is an apocalyptic number.

550723 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

550723 is a deficient number, since it is larger than the sum of its proper divisors (10445).

550723 is a wasteful number, since it uses less digits than its factorization.

550723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10444.

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 550723 is about 742.1071351227. The cubic root of 550723 is about 81.9680125087.

Adding to 550723 its reverse (327055), we get a palindrome (877778).

The spelling of 550723 in words is "five hundred fifty thousand, seven hundred twenty-three".