43236161 has 2 divisors, whose sum is σ = 43236162. Its totient is φ = 43236160.

The previous prime is 43236143. The next prime is 43236163. The reversal of 43236161 is 16163234.

43236161 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., 42981136 + 255025 = 6556^2 + 505^2 .

It is a cyclic number.

It is not a de Polignac number, because 43236161 - 2¹⁴ = 43219777 is a prime.

Together with 43236163, it forms a pair of twin primes.

It is a Chen prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 43236161.

It is not a weakly prime, because it can be changed into another prime (43236163) 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, 21618080 + 21618081.

It is an arithmetic number, because the mean of its divisors is an integer number (21618081).

Almost surely, 2^43236161 is an apocalyptic number.

It is an amenable number.

43236161 is a deficient number, since it is larger than the sum of its proper divisors (1).

43236161 is an equidigital number, since it uses as much as digits as its factorization.

43236161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 43236161 is about 6575.4209751163. The cubic root of 43236161 is about 350.9800044345.

Adding to 43236161 its reverse (16163234), we get a palindrome (59399395).

The spelling of 43236161 in words is "forty-three million, two hundred thirty-six thousand, one hundred sixty-one".