91005371 has 2 divisors, whose sum is σ = 91005372. Its totient is φ = 91005370.

The previous prime is 91005361. The next prime is 91005389. The reversal of 91005371 is 17350019.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91005371 - 2¹⁸ = 90743227 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 91005371.

It is not a weakly prime, because it can be changed into another prime (91005331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45502685 + 45502686.

It is an arithmetic number, because the mean of its divisors is an integer number (45502686).

Almost surely, 2^91005371 is an apocalyptic number.

91005371 is a deficient number, since it is larger than the sum of its proper divisors (1).

91005371 is an equidigital number, since it uses as much as digits as its factorization.

91005371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 91005371 is about 9539.6735269086. The cubic root of 91005371 is about 449.8029936002.

The spelling of 91005371 in words is "ninety-one million, five thousand, three hundred seventy-one".