550450139 has 2 divisors, whose sum is σ = 550450140. Its totient is φ = 550450138.

The previous prime is 550450097. The next prime is 550450207. The reversal of 550450139 is 931054055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 550450139 - 2⁸ = 550449883 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (550450039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275225069 + 275225070.

It is an arithmetic number, because the mean of its divisors is an integer number (275225070).

Almost surely, 2^550450139 is an apocalyptic number.

550450139 is a deficient number, since it is larger than the sum of its proper divisors (1).

550450139 is an equidigital number, since it uses as much as digits as its factorization.

550450139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 550450139 is about 23461.6738320180. The cubic root of 550450139 is about 819.5447299267.

The spelling of 550450139 in words is "five hundred fifty million, four hundred fifty thousand, one hundred thirty-nine".