550369 has 2 divisors, whose sum is σ = 550370. Its totient is φ = 550368.

The previous prime is 550351. The next prime is 550379. The reversal of 550369 is 963055.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 471969 + 78400 = 687^2 + 280^2 .

It is a cyclic number.

It is not a de Polignac number, because 550369 - 2⁵ = 550337 is a prime.

It is a super-2 number, since 2×550369² = 605812072322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (550309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275184 + 275185.

It is an arithmetic number, because the mean of its divisors is an integer number (275185).

2⁵⁵⁰³⁶⁹ is an apocalyptic number.

It is an amenable number.

550369 is a deficient number, since it is larger than the sum of its proper divisors (1).

550369 is an equidigital number, since it uses as much as digits as its factorization.

550369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 550369 is about 741.8685867457. The cubic root of 550369 is about 81.9504459669.

Subtracting 550369 from its reverse (963055), we obtain a triangular number (412686 = T₉₀₈).

It can be divided in two parts, 550 and 369, that added together give a palindrome (919).

The spelling of 550369 in words is "five hundred fifty thousand, three hundred sixty-nine".