550390 has 16 divisors (see below), whose sum is σ = 1034208. Its totient is φ = 210496.

The previous prime is 550379. The next prime is 550427. The reversal of 550390 is 93055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 967 + ... + 1426.

It is an arithmetic number, because the mean of its divisors is an integer number (64638).

2⁵⁵⁰³⁹⁰ is an apocalyptic number.

550390 is a deficient number, since it is larger than the sum of its proper divisors (483818).

550390 is a wasteful number, since it uses less digits than its factorization.

550390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423.

The product of its (nonzero) digits is 675, while the sum is 22.

The square root of 550390 is about 741.8827400607. The cubic root of 550390 is about 81.9514882600.

The spelling of 550390 in words is "five hundred fifty thousand, three hundred ninety".