550005 has 16 divisors (see below), whose sum is σ = 904704. Its totient is φ = 285120.

The previous prime is 549979. The next prime is 550007. The reversal of 550005 is 500055.

It is not a de Polignac number, because 550005 - 2⁷ = 549877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

550005 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60 + ... + 1050.

It is an arithmetic number, because the mean of its divisors is an integer number (56544).

2⁵⁵⁰⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

550005 is a deficient number, since it is larger than the sum of its proper divisors (354699).

550005 is a wasteful number, since it uses less digits than its factorization.

550005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036.

The product of its (nonzero) digits is 125, while the sum is 15.

The square root of 550005 is about 741.6232197012. The cubic root of 550005 is about 81.9323753385.

The spelling of 550005 in words is "five hundred fifty thousand, five".