44905561 has 2 divisors, whose sum is σ = 44905562. Its totient is φ = 44905560.

The previous prime is 44905547. The next prime is 44905579. The reversal of 44905561 is 16550944.

44905561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43099225 + 1806336 = 6565^2 + 1344^2 .

It is a cyclic number.

It is not a de Polignac number, because 44905561 - 2⁵ = 44905529 is a prime.

It is not a weakly prime, because it can be changed into another prime (44905501) 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 as a sum of consecutive naturals, namely, 22452780 + 22452781.

It is an arithmetic number, because the mean of its divisors is an integer number (22452781).

Almost surely, 2^44905561 is an apocalyptic number.

It is an amenable number.

44905561 is a deficient number, since it is larger than the sum of its proper divisors (1).

44905561 is an equidigital number, since it uses as much as digits as its factorization.

44905561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 44905561 is about 6701.1611680365. The cubic root of 44905561 is about 355.4403343705.

The spelling of 44905561 in words is "forty-four million, nine hundred five thousand, five hundred sixty-one".