91141543 has 2 divisors, whose sum is σ = 91141544. Its totient is φ = 91141542.

The previous prime is 91141517. The next prime is 91141559. The reversal of 91141543 is 34514119.

It is a strong prime.

It is an emirp because it is prime and its reverse (34514119) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91141543 - 2⁵ = 91141511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91141513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45570771 + 45570772.

It is an arithmetic number, because the mean of its divisors is an integer number (45570772).

Almost surely, 2^91141543 is an apocalyptic number.

91141543 is a deficient number, since it is larger than the sum of its proper divisors (1).

91141543 is an equidigital number, since it uses as much as digits as its factorization.

91141543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 28.

The square root of 91141543 is about 9546.8080005832. The cubic root of 91141543 is about 450.0272296280.

The spelling of 91141543 in words is "ninety-one million, one hundred forty-one thousand, five hundred forty-three".