83801161 has 2 divisors, whose sum is σ = 83801162. Its totient is φ = 83801160.

The previous prime is 83801131. The next prime is 83801197. The reversal of 83801161 is 16110838.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78765625 + 5035536 = 8875^2 + 2244^2 .

It is a cyclic number.

It is not a de Polignac number, because 83801161 - 2⁹ = 83800649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83801131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41900580 + 41900581.

It is an arithmetic number, because the mean of its divisors is an integer number (41900581).

Almost surely, 2^83801161 is an apocalyptic number.

It is an amenable number.

83801161 is a deficient number, since it is larger than the sum of its proper divisors (1).

83801161 is an equidigital number, since it uses as much as digits as its factorization.

83801161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 83801161 is about 9154.2974061366. The cubic root of 83801161 is about 437.6060777881.

Adding to 83801161 its reverse (16110838), we get a palindrome (99911999).

The spelling of 83801161 in words is "eighty-three million, eight hundred one thousand, one hundred sixty-one".