550018 has 16 divisors (see below), whose sum is σ = 998784. Its totient is φ = 221760.

The previous prime is 550009. The next prime is 550027. The reversal of 550018 is 810055.

It is an interprime number because it is at equal distance from previous prime (550009) and next prime (550027).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 549977 and 550004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 918 + ... + 1393.

It is an arithmetic number, because the mean of its divisors is an integer number (62424).

2⁵⁵⁰⁰¹⁸ is an apocalyptic number.

550018 is a deficient number, since it is larger than the sum of its proper divisors (448766).

550018 is a wasteful number, since it uses less digits than its factorization.

550018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 550018 is about 741.6319842078. The cubic root of 550018 is about 81.9330208553.

The spelling of 550018 in words is "five hundred fifty thousand, eighteen".