2775000091 has 2 divisors, whose sum is σ = 2775000092. Its totient is φ = 2775000090.

The previous prime is 2775000079. The next prime is 2775000097. The reversal of 2775000091 is 1900005772.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2775000091 - 2³¹ = 627516443 is a prime.

It is not a weakly prime, because it can be changed into another prime (2775000097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1387500045 + 1387500046.

It is an arithmetic number, because the mean of its divisors is an integer number (1387500046).

Almost surely, 2^2775000091 is an apocalyptic number.

2775000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2775000091 is an equidigital number, since it uses as much as digits as its factorization.

2775000091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 2775000091 is about 52678.2696279975. The cubic root of 2775000091 is about 1405.2523942160.

The spelling of 2775000091 in words is "two billion, seven hundred seventy-five million, ninety-one", and thus it is an aban number.