91841 has 2 divisors, whose sum is σ = 91842. Its totient is φ = 91840.

The previous prime is 91837. The next prime is 91867. The reversal of 91841 is 14819.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87616 + 4225 = 296^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 91841 - 2² = 91837 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91841.

It is not a weakly prime, because it can be changed into another prime (91801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45920 + 45921.

It is an arithmetic number, because the mean of its divisors is an integer number (45921).

2⁹¹⁸⁴¹ is an apocalyptic number.

It is an amenable number.

91841 is a deficient number, since it is larger than the sum of its proper divisors (1).

91841 is an equidigital number, since it uses as much as digits as its factorization.

91841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 23.

The square root of 91841 is about 303.0528006800. The cubic root of 91841 is about 45.1175527339.

Adding to 91841 its product of digits (288), we get a palindrome (92129).

It can be divided in two parts, 918 and 41, that added together give a palindrome (959).

The spelling of 91841 in words is "ninety-one thousand, eight hundred forty-one".