45112091 has 4 divisors (see below), whose sum is σ = 45125784. Its totient is φ = 45098400.

The previous prime is 45112069. The next prime is 45112097. The reversal of 45112091 is 19021154.

It is a happy number.

45112091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 45112091 - 2¹⁸ = 44849947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45112097) 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 in 3 ways as a sum of consecutive naturals, for example, 1436 + ... + 9606.

It is an arithmetic number, because the mean of its divisors is an integer number (11281446).

Almost surely, 2^45112091 is an apocalyptic number.

45112091 is a deficient number, since it is larger than the sum of its proper divisors (13693).

45112091 is an equidigital number, since it uses as much as digits as its factorization.

45112091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13692.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 45112091 is about 6716.5535060774. The cubic root of 45112091 is about 355.9844157425.

The spelling of 45112091 in words is "forty-five million, one hundred twelve thousand, ninety-one".