550997311 has 2 divisors, whose sum is σ = 550997312. Its totient is φ = 550997310.

The previous prime is 550997287. The next prime is 550997351. The reversal of 550997311 is 113799055.

It is an a-pointer prime, because the next prime (550997351) can be obtained adding 550997311 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 550997311 - 2⁹ = 550996799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550997351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275498655 + 275498656.

It is an arithmetic number, because the mean of its divisors is an integer number (275498656).

Almost surely, 2^550997311 is an apocalyptic number.

550997311 is a deficient number, since it is larger than the sum of its proper divisors (1).

550997311 is an equidigital number, since it uses as much as digits as its factorization.

550997311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42525, while the sum is 40.

The square root of 550997311 is about 23473.3319109154. The cubic root of 550997311 is about 819.8161946741.

The spelling of 550997311 in words is "five hundred fifty million, nine hundred ninety-seven thousand, three hundred eleven".