550394 has 8 divisors (see below), whose sum is σ = 889140. Its totient is φ = 254016.

The previous prime is 550379. The next prime is 550427. The reversal of 550394 is 493055.

550394 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 2 ways, for example, as 543169 + 7225 = 737^2 + 85^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 21169 = 550394 / (5 + 5 + 0 + 3 + 9 + 4).

It is an Ulam number.

It is a zygodrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10559 + ... + 10610.

2⁵⁵⁰³⁹⁴ is an apocalyptic number.

550394 is a deficient number, since it is larger than the sum of its proper divisors (338746).

550394 is a wasteful number, since it uses less digits than its factorization.

550394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21184.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 550394 is about 741.8854358996. The cubic root of 550394 is about 81.9516867890.

The spelling of 550394 in words is "five hundred fifty thousand, three hundred ninety-four".