550278539 has 2 divisors, whose sum is σ = 550278540. Its totient is φ = 550278538.

The previous prime is 550278523. The next prime is 550278583. The reversal of 550278539 is 935872055.

It is an a-pointer prime, because the next prime (550278583) can be obtained adding 550278539 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 550278539 - 2⁴ = 550278523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 550278539.

It is not a weakly prime, because it can be changed into another prime (550278139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275139269 + 275139270.

It is an arithmetic number, because the mean of its divisors is an integer number (275139270).

Almost surely, 2^550278539 is an apocalyptic number.

550278539 is a deficient number, since it is larger than the sum of its proper divisors (1).

550278539 is an equidigital number, since it uses as much as digits as its factorization.

550278539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 44.

The square root of 550278539 is about 23458.0165188790. The cubic root of 550278539 is about 819.4595581238.

The spelling of 550278539 in words is "five hundred fifty million, two hundred seventy-eight thousand, five hundred thirty-nine".