43229561 has 2 divisors, whose sum is σ = 43229562. Its totient is φ = 43229560.

The previous prime is 43229551. The next prime is 43229567. The reversal of 43229561 is 16592234.

It is a happy number.

43229561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38688400 + 4541161 = 6220^2 + 2131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43229561 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (43229567) 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, 21614780 + 21614781.

It is an arithmetic number, because the mean of its divisors is an integer number (21614781).

Almost surely, 2^43229561 is an apocalyptic number.

It is an amenable number.

43229561 is a deficient number, since it is larger than the sum of its proper divisors (1).

43229561 is an equidigital number, since it uses as much as digits as its factorization.

43229561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 43229561 is about 6574.9190869546. The cubic root of 43229561 is about 350.9621444930.

The spelling of 43229561 in words is "forty-three million, two hundred twenty-nine thousand, five hundred sixty-one".