9045520091 has 4 divisors (see below), whose sum is σ = 9045738000. Its totient is φ = 9045302184.

The previous prime is 9045520087. The next prime is 9045520111. The reversal of 9045520091 is 1900255409.

9045520091 is digitally balanced in base 3, 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 an emirpimes, since its reverse is a distinct semiprime: 1900255409 = 13 ⋅146173493.

It is a cyclic number.

It is not a de Polignac number, because 9045520091 - 2² = 9045520087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9045520591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25256 + ... + 136853.

It is an arithmetic number, because the mean of its divisors is an integer number (2261434500).

Almost surely, 2^9045520091 is an apocalyptic number.

9045520091 is a deficient number, since it is larger than the sum of its proper divisors (217909).

9045520091 is a wasteful number, since it uses less digits than its factorization.

9045520091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217908.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 9045520091 is about 95107.9391586212. The cubic root of 9045520091 is about 2083.5848015231.

The spelling of 9045520091 in words is "nine billion, forty-five million, five hundred twenty thousand, ninety-one".