550845 has 12 divisors (see below), whose sum is σ = 954876. Its totient is φ = 293760.

The previous prime is 550843. The next prime is 550859. The reversal of 550845 is 548055.

550845 = T₁₄ + T₁₅ + ... + T₁₄₈.

It can be written as a sum of positive squares in 2 ways, for example, as 168921 + 381924 = 411^2 + 618^2 .

It is not a de Polignac number, because 550845 - 2¹ = 550843 is a prime.

It is a Curzon number.

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 550845.

It is not an unprimeable number, because it can be changed into a prime (550841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6076 + ... + 6165.

It is an arithmetic number, because the mean of its divisors is an integer number (79573).

2⁵⁵⁰⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

550845 is a deficient number, since it is larger than the sum of its proper divisors (404031).

550845 is a wasteful number, since it uses less digits than its factorization.

550845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12252 (or 12249 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 550845 is about 742.1893289451. The cubic root of 550845 is about 81.9740647704.

The spelling of 550845 in words is "five hundred fifty thousand, eight hundred forty-five".