9550055491 has 2 divisors, whose sum is σ = 9550055492. Its totient is φ = 9550055490.

The previous prime is 9550055477. The next prime is 9550055513. The reversal of 9550055491 is 1945500559.

It is a weak prime.

It is an emirp because it is prime and its reverse (1945500559) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9550055491 is a prime.

It is not a weakly prime, because it can be changed into another prime (9550055441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4775027745 + 4775027746.

It is an arithmetic number, because the mean of its divisors is an integer number (4775027746).

Almost surely, 2^9550055491 is an apocalyptic number.

9550055491 is a deficient number, since it is larger than the sum of its proper divisors (1).

9550055491 is an equidigital number, since it uses as much as digits as its factorization.

9550055491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 202500, while the sum is 43.

The square root of 9550055491 is about 97724.3853447030. The cubic root of 9550055491 is about 2121.6250364587.

The spelling of 9550055491 in words is "nine billion, five hundred fifty million, fifty-five thousand, four hundred ninety-one".