40332161 has 2 divisors, whose sum is σ = 40332162. Its totient is φ = 40332160.

The previous prime is 40332139. The next prime is 40332169. The reversal of 40332161 is 16123304.

40332161 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., 37442161 + 2890000 = 6119^2 + 1700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40332161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40332169) 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, 20166080 + 20166081.

It is an arithmetic number, because the mean of its divisors is an integer number (20166081).

Almost surely, 2^40332161 is an apocalyptic number.

It is an amenable number.

40332161 is a deficient number, since it is larger than the sum of its proper divisors (1).

40332161 is an equidigital number, since it uses as much as digits as its factorization.

40332161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 40332161 is about 6350.7606631017. The cubic root of 40332161 is about 342.9392265686.

Adding to 40332161 its reverse (16123304), we get a palindrome (56455465).

The spelling of 40332161 in words is "forty million, three hundred thirty-two thousand, one hundred sixty-one".