44945561 has 4 divisors (see below), whose sum is σ = 45059172. Its totient is φ = 44831952.

The previous prime is 44945531. The next prime is 44945581. The reversal of 44945561 is 16554944.

44945561 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.

It can be written as a sum of positive squares in 2 ways, for example, as 18361225 + 26584336 = 4285^2 + 5156^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44945561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44945531) 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, 56210 + ... + 57003.

It is an arithmetic number, because the mean of its divisors is an integer number (11264793).

Almost surely, 2^44945561 is an apocalyptic number.

It is an amenable number.

44945561 is a deficient number, since it is larger than the sum of its proper divisors (113611).

44945561 is a wasteful number, since it uses less digits than its factorization.

44945561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113610.

The product of its digits is 86400, while the sum is 38.

The square root of 44945561 is about 6704.1450610797. The cubic root of 44945561 is about 355.5458401895.

The spelling of 44945561 in words is "forty-four million, nine hundred forty-five thousand, five hundred sixty-one".