550406 has 8 divisors (see below), whose sum is σ = 831600. Its totient is φ = 273208.

The previous prime is 550379. The next prime is 550427. The reversal of 550406 is 604055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

550406 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 626 + ... + 1221.

It is an arithmetic number, because the mean of its divisors is an integer number (103950).

2⁵⁵⁰⁴⁰⁶ is an apocalyptic number.

550406 is a deficient number, since it is larger than the sum of its proper divisors (281194).

550406 is a wasteful number, since it uses less digits than its factorization.

550406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 550406 is about 741.8935233576. The cubic root of 550406 is about 81.9522823703.

The spelling of 550406 in words is "five hundred fifty thousand, four hundred six".