45909191 has 8 divisors (see below), whose sum is σ = 46612800. Its totient is φ = 45208800.

The previous prime is 45909181. The next prime is 45909221. The reversal of 45909191 is 19190954.

45909191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45909191 - 2¹⁴ = 45892807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45909121) 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 7 ways as a sum of consecutive naturals, for example, 54965 + ... + 55793.

It is an arithmetic number, because the mean of its divisors is an integer number (5826600).

Almost surely, 2^45909191 is an apocalyptic number.

45909191 is a deficient number, since it is larger than the sum of its proper divisors (703609).

45909191 is an equidigital number, since it uses as much as digits as its factorization.

45909191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 45909191 is about 6775.6321476302. The cubic root of 45909191 is about 358.0688542491.

The spelling of 45909191 in words is "forty-five million, nine hundred nine thousand, one hundred ninety-one".