550028 has 6 divisors (see below), whose sum is σ = 962556. Its totient is φ = 275012.

The previous prime is 550027. The next prime is 550049. The reversal of 550028 is 820055.

It is a junction number, because it is equal to n+sod(n) for n = 549991 and 550009.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 550028.

It is not an unprimeable number, because it can be changed into a prime (550027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68750 + ... + 68757.

It is an arithmetic number, because the mean of its divisors is an integer number (160426).

2⁵⁵⁰⁰²⁸ is an apocalyptic number.

It is an amenable number.

550028 is a deficient number, since it is larger than the sum of its proper divisors (412528).

550028 is a wasteful number, since it uses less digits than its factorization.

550028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137511 (or 137509 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 550028 is about 741.6387260655. The cubic root of 550028 is about 81.9335173998.

The spelling of 550028 in words is "five hundred fifty thousand, twenty-eight".