550439 has 2 divisors, whose sum is σ = 550440. Its totient is φ = 550438.

The previous prime is 550427. The next prime is 550441. The reversal of 550439 is 934055.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550439 is a prime.

Together with 550441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275219 + 275220.

It is an arithmetic number, because the mean of its divisors is an integer number (275220).

2⁵⁵⁰⁴³⁹ is an apocalyptic number.

550439 is a deficient number, since it is larger than the sum of its proper divisors (1).

550439 is an equidigital number, since it uses as much as digits as its factorization.

550439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 550439 is about 741.9157634125. The cubic root of 550439 is about 81.9539201742.

It can be divided in two parts, 550 and 439, that added together give a palindrome (989).

The spelling of 550439 in words is "five hundred fifty thousand, four hundred thirty-nine".