550691 has 2 divisors, whose sum is σ = 550692. Its totient is φ = 550690.

The previous prime is 550679. The next prime is 550703. The reversal of 550691 is 196055.

It is a balanced prime because it is at equal distance from previous prime (550679) and next prime (550703).

It is a cyclic number.

It is not a de Polignac number, because 550691 - 2¹⁰ = 549667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 550691.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 550691.

It is not a weakly prime, because it can be changed into another prime (550621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275345 + 275346.

It is an arithmetic number, because the mean of its divisors is an integer number (275346).

2⁵⁵⁰⁶⁹¹ is an apocalyptic number.

550691 is a deficient number, since it is larger than the sum of its proper divisors (1).

550691 is an equidigital number, since it uses as much as digits as its factorization.

550691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 550691 is about 742.0855745802. The cubic root of 550691 is about 81.9664248823.

The spelling of 550691 in words is "five hundred fifty thousand, six hundred ninety-one".