550913 has 12 divisors (see below), whose sum is σ = 630420. Its totient is φ = 480480.

The previous prime is 550909. The next prime is 550937. The reversal of 550913 is 319055.

It can be written as a sum of positive squares in 2 ways, for example, as 223729 + 327184 = 473^2 + 572^2 .

It is not a de Polignac number, because 550913 - 2² = 550909 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 550913.

It is not an unprimeable number, because it can be changed into a prime (550903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3431 + ... + 3587.

It is an arithmetic number, because the mean of its divisors is an integer number (52535).

It is a Proth number, since it is equal to 269 ⋅ 2¹¹ + 1 and 269 < 2¹¹.

2⁵⁵⁰⁹¹³ is an apocalyptic number.

It is an amenable number.

550913 is a deficient number, since it is larger than the sum of its proper divisors (79507).

550913 is a wasteful number, since it uses less digits than its factorization.

550913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 550913 is about 742.2351379448. The cubic root of 550913 is about 81.9774377744.

Adding to 550913 its reverse (319055), we get a palindrome (869968).

It can be divided in two parts, 5509 and 13, that multiplied together give a palindrome (71617).

The spelling of 550913 in words is "five hundred fifty thousand, nine hundred thirteen".