550939 has 2 divisors, whose sum is σ = 550940. Its totient is φ = 550938.

The previous prime is 550937. The next prime is 550951. The reversal of 550939 is 939055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 550939 - 2¹ = 550937 is a prime.

Together with 550937, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 550939.

It is not a weakly prime, because it can be changed into another prime (550937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275469 + 275470.

It is an arithmetic number, because the mean of its divisors is an integer number (275470).

2⁵⁵⁰⁹³⁹ is an apocalyptic number.

550939 is a deficient number, since it is larger than the sum of its proper divisors (1).

550939 is an equidigital number, since it uses as much as digits as its factorization.

550939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075, while the sum is 31.

The square root of 550939 is about 742.2526524035. The cubic root of 550939 is about 81.9787273790.

The spelling of 550939 in words is "five hundred fifty thousand, nine hundred thirty-nine".