550139 has 2 divisors, whose sum is σ = 550140. Its totient is φ = 550138.

The previous prime is 550129. The next prime is 550163. The reversal of 550139 is 931055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 550139 - 2⁸ = 549883 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 550139.

It is not a weakly prime, because it can be changed into another prime (550129) by changing a digit.

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 as a sum of consecutive naturals, namely, 275069 + 275070.

It is an arithmetic number, because the mean of its divisors is an integer number (275070).

2⁵⁵⁰¹³⁹ is an apocalyptic number.

550139 is a deficient number, since it is larger than the sum of its proper divisors (1).

550139 is an equidigital number, since it uses as much as digits as its factorization.

550139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 550139 is about 741.7135565702. The cubic root of 550139 is about 81.9390286397.

The spelling of 550139 in words is "five hundred fifty thousand, one hundred thirty-nine".