9045581 has 4 divisors (see below), whose sum is σ = 9577692. Its totient is φ = 8513472.

The previous prime is 9045571. The next prime is 9045587. The reversal of 9045581 is 1855409.

9045581 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: 1855409 = 347 ⋅5347.

It can be written as a sum of positive squares in 2 ways, for example, as 2669956 + 6375625 = 1634^2 + 2525^2 .

It is a cyclic number.

It is not a de Polignac number, because 9045581 - 2¹⁰ = 9044557 is a prime.

It is a super-2 number, since 2×9045581² = 163645071255122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9045587) 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, 266030 + ... + 266063.

It is an arithmetic number, because the mean of its divisors is an integer number (2394423).

Almost surely, 2^9045581 is an apocalyptic number.

It is an amenable number.

9045581 is a deficient number, since it is larger than the sum of its proper divisors (532111).

9045581 is a wasteful number, since it uses less digits than its factorization.

9045581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532110.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 9045581 is about 3007.5872389675. The cubic root of 9045581 is about 208.3589478195.

The spelling of 9045581 in words is "nine million, forty-five thousand, five hundred eighty-one".