32643161 has 2 divisors, whose sum is σ = 32643162. Its totient is φ = 32643160.

The previous prime is 32643157. The next prime is 32643167. The reversal of 32643161 is 16134623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23377225 + 9265936 = 4835^2 + 3044^2 .

It is a cyclic number.

It is not a de Polignac number, because 32643161 - 2² = 32643157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32643161.

It is not a weakly prime, because it can be changed into another prime (32643167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16321580 + 16321581.

It is an arithmetic number, because the mean of its divisors is an integer number (16321581).

Almost surely, 2^32643161 is an apocalyptic number.

It is an amenable number.

32643161 is a deficient number, since it is larger than the sum of its proper divisors (1).

32643161 is an equidigital number, since it uses as much as digits as its factorization.

32643161 is an evil number, because the sum of its binary digits is even.

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

The square root of 32643161 is about 5713.4193789709. The cubic root of 32643161 is about 319.5931058823.

Adding to 32643161 its reverse (16134623), we get a palindrome (48777784).

The spelling of 32643161 in words is "thirty-two million, six hundred forty-three thousand, one hundred sixty-one".