550995091 has 2 divisors, whose sum is σ = 550995092. Its totient is φ = 550995090.

The previous prime is 550995089. The next prime is 550995161. The reversal of 550995091 is 190599055.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 550995091 - 2¹ = 550995089 is a prime.

Together with 550995089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (550995001) 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, 275497545 + 275497546.

It is an arithmetic number, because the mean of its divisors is an integer number (275497546).

Almost surely, 2^550995091 is an apocalyptic number.

550995091 is a deficient number, since it is larger than the sum of its proper divisors (1).

550995091 is an equidigital number, since it uses as much as digits as its factorization.

550995091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91125, while the sum is 43.

The square root of 550995091 is about 23473.2846231626. The cubic root of 550995091 is about 819.8150936437.

The spelling of 550995091 in words is "five hundred fifty million, nine hundred ninety-five thousand, ninety-one".