91433141 has 2 divisors, whose sum is σ = 91433142. Its totient is φ = 91433140.

The previous prime is 91433131. The next prime is 91433183. The reversal of 91433141 is 14133419.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47210641 + 44222500 = 6871^2 + 6650^2 .

It is an emirp because it is prime and its reverse (14133419) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91433141 - 2⁶ = 91433077 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91433141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91433101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45716570 + 45716571.

It is an arithmetic number, because the mean of its divisors is an integer number (45716571).

Almost surely, 2^91433141 is an apocalyptic number.

It is an amenable number.

91433141 is a deficient number, since it is larger than the sum of its proper divisors (1).

91433141 is an equidigital number, since it uses as much as digits as its factorization.

91433141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 91433141 is about 9562.0678202991. The cubic root of 91433141 is about 450.5066573214.

The spelling of 91433141 in words is "ninety-one million, four hundred thirty-three thousand, one hundred forty-one".