43834561 has 2 divisors, whose sum is σ = 43834562. Its totient is φ = 43834560.

The previous prime is 43834543. The next prime is 43834579. The reversal of 43834561 is 16543834.

It is a happy number.

43834561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (43834543) and next prime (43834579).

It can be written as a sum of positive squares in only one way, i.e., 42771600 + 1062961 = 6540^2 + 1031^2 .

It is a cyclic number.

It is not a de Polignac number, because 43834561 - 2¹¹ = 43832513 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (43831561) 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, 21917280 + 21917281.

It is an arithmetic number, because the mean of its divisors is an integer number (21917281).

Almost surely, 2^43834561 is an apocalyptic number.

It is an amenable number.

43834561 is a deficient number, since it is larger than the sum of its proper divisors (1).

43834561 is an equidigital number, since it uses as much as digits as its factorization.

43834561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 34.

The square root of 43834561 is about 6620.7674026505. The cubic root of 43834561 is about 352.5918101650.

The spelling of 43834561 in words is "forty-three million, eight hundred thirty-four thousand, five hundred sixty-one".