550478 has 8 divisors (see below), whose sum is σ = 854280. Its totient is φ = 265720.

The previous prime is 550471. The next prime is 550489. The reversal of 550478 is 874055.

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 (29).

It is a self number, because there is not a number n which added to its sum of digits gives 550478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550471) by changing a digit.

550478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4688 + ... + 4803.

It is an arithmetic number, because the mean of its divisors is an integer number (106785).

2⁵⁵⁰⁴⁷⁸ is an apocalyptic number.

550478 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

550478 is a deficient number, since it is larger than the sum of its proper divisors (303802).

550478 is a wasteful number, since it uses less digits than its factorization.

550478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9522.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 550478 is about 741.9420462543. The cubic root of 550478 is about 81.9558556762.

It can be divided in two parts, 55047 and 8, that added together give a palindrome (55055).

The spelling of 550478 in words is "five hundred fifty thousand, four hundred seventy-eight".