550859 has 2 divisors, whose sum is σ = 550860. Its totient is φ = 550858.

The previous prime is 550843. The next prime is 550861. The reversal of 550859 is 958055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550859 - 2⁴ = 550843 is a prime.

Together with 550861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (552859) 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, 275429 + 275430.

It is an arithmetic number, because the mean of its divisors is an integer number (275430).

2⁵⁵⁰⁸⁵⁹ is an apocalyptic number.

550859 is a deficient number, since it is larger than the sum of its proper divisors (1).

550859 is an equidigital number, since it uses as much as digits as its factorization.

550859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 550859 is about 742.1987604409. The cubic root of 550859 is about 81.9747592351.

The spelling of 550859 in words is "five hundred fifty thousand, eight hundred fifty-nine".