550819 has 4 divisors (see below), whose sum is σ = 565744. Its totient is φ = 535896.

The previous prime is 550813. The next prime is 550831. The reversal of 550819 is 918055.

550819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 918055 = 5 ⋅183611.

It is a cyclic number.

It is not a de Polignac number, because 550819 - 2³ = 550811 is a prime.

It is a super-2 number, since 2×550819² = 606803141522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7407 + ... + 7480.

It is an arithmetic number, because the mean of its divisors is an integer number (141436).

2⁵⁵⁰⁸¹⁹ is an apocalyptic number.

550819 is a deficient number, since it is larger than the sum of its proper divisors (14925).

550819 is a wasteful number, since it uses less digits than its factorization.

550819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14924.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 550819 is about 742.1718129921. The cubic root of 550819 is about 81.9727750191.

Subtracting 550819 from its reverse (918055), we obtain a square (367236 = 606²).

It can be divided in two parts, 550 and 819, that added together give a square (1369 = 37²).

The spelling of 550819 in words is "five hundred fifty thousand, eight hundred nineteen".