550345 has 4 divisors (see below), whose sum is σ = 660420. Its totient is φ = 440272.

The previous prime is 550337. The next prime is 550351. The reversal of 550345 is 543055.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 266256 + 284089 = 516^2 + 533^2 .

It is a cyclic number.

It is not a de Polignac number, because 550345 - 2³ = 550337 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55030 + ... + 55039.

It is an arithmetic number, because the mean of its divisors is an integer number (165105).

2⁵⁵⁰³⁴⁵ is an apocalyptic number.

It is an amenable number.

550345 is a deficient number, since it is larger than the sum of its proper divisors (110075).

550345 is a wasteful number, since it uses less digits than its factorization.

550345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110074.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 550345 is about 741.8524111978. The cubic root of 550345 is about 81.9492547423.

Subtracting from 550345 its product of nonzero digits (1500), we obtain a palindrome (548845).

The spelling of 550345 in words is "five hundred fifty thousand, three hundred forty-five".