91541843 has 2 divisors, whose sum is σ = 91541844. Its totient is φ = 91541842.

The previous prime is 91541831. The next prime is 91541861. The reversal of 91541843 is 34814519.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91541843 - 2¹⁴ = 91525459 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91541743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45770921 + 45770922.

It is an arithmetic number, because the mean of its divisors is an integer number (45770922).

Almost surely, 2^91541843 is an apocalyptic number.

91541843 is a deficient number, since it is larger than the sum of its proper divisors (1).

91541843 is an equidigital number, since it uses as much as digits as its factorization.

91541843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 91541843 is about 9567.7501535105. The cubic root of 91541843 is about 450.6851177069.

The spelling of 91541843 in words is "ninety-one million, five hundred forty-one thousand, eight hundred forty-three".