45109091 has 2 divisors, whose sum is σ = 45109092. Its totient is φ = 45109090.

The previous prime is 45109087. The next prime is 45109111. The reversal of 45109091 is 19090154.

45109091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45109091 - 2² = 45109087 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45109081) 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, 22554545 + 22554546.

It is an arithmetic number, because the mean of its divisors is an integer number (22554546).

Almost surely, 2^45109091 is an apocalyptic number.

45109091 is a deficient number, since it is larger than the sum of its proper divisors (1).

45109091 is an equidigital number, since it uses as much as digits as its factorization.

45109091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 45109091 is about 6716.3301735397. The cubic root of 45109091 is about 355.9765244588.

The spelling of 45109091 in words is "forty-five million, one hundred nine thousand, ninety-one".