550000478 has 16 divisors (see below), whose sum is σ = 840879360. Its totient is φ = 269728536.

The previous prime is 550000471. The next prime is 550000483. The reversal of 550000478 is 874000055.

It is a self number, because there is not a number n which added to its sum of digits gives 550000478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550000471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49601 + ... + 59667.

It is an arithmetic number, because the mean of its divisors is an integer number (52554960).

Almost surely, 2^550000478 is an apocalyptic number.

550000478 is a deficient number, since it is larger than the sum of its proper divisors (290878882).

550000478 is a wasteful number, since it uses less digits than its factorization.

550000478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10591.

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

The square root of 550000478 is about 23452.0889901092. The cubic root of 550000478 is about 819.3215079555.

It can be divided in two parts, 55000047 and 8, that added together give a palindrome (55000055).

The spelling of 550000478 in words is "five hundred fifty million, four hundred seventy-eight", and thus it is an aban number.