91945141 has 2 divisors, whose sum is σ = 91945142. Its totient is φ = 91945140.

The previous prime is 91945127. The next prime is 91945153. The reversal of 91945141 is 14154919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91126116 + 819025 = 9546^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 91945141 - 2⁷ = 91945013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91945097 and 91945106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91945121) 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, 45972570 + 45972571.

It is an arithmetic number, because the mean of its divisors is an integer number (45972571).

Almost surely, 2^91945141 is an apocalyptic number.

It is an amenable number.

91945141 is a deficient number, since it is larger than the sum of its proper divisors (1).

91945141 is an equidigital number, since it uses as much as digits as its factorization.

91945141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 34.

The square root of 91945141 is about 9588.8028971295. The cubic root of 91945141 is about 451.3459963099.

The spelling of 91945141 in words is "ninety-one million, nine hundred forty-five thousand, one hundred forty-one".