550331669 has 2 divisors, whose sum is σ = 550331670. Its totient is φ = 550331668.

The previous prime is 550331653. The next prime is 550331671. The reversal of 550331669 is 966133055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 405418225 + 144913444 = 20135^2 + 12038^2 .

It is a cyclic number.

It is not a de Polignac number, because 550331669 - 2⁴ = 550331653 is a prime.

It is a super-2 number, since 2×550331669² = 605729891808651122, which contains 22 as substring.

Together with 550331671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550331699) 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, 275165834 + 275165835.

It is an arithmetic number, because the mean of its divisors is an integer number (275165835).

Almost surely, 2^550331669 is an apocalyptic number.

It is an amenable number.

550331669 is a deficient number, since it is larger than the sum of its proper divisors (1).

550331669 is an equidigital number, since it uses as much as digits as its factorization.

550331669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 550331669 is about 23459.1489402323. The cubic root of 550331669 is about 819.4859305165.

The spelling of 550331669 in words is "five hundred fifty million, three hundred thirty-one thousand, six hundred sixty-nine".