91651141 has 2 divisors, whose sum is σ = 91651142. Its totient is φ = 91651140.

The previous prime is 91651121. The next prime is 91651169. The reversal of 91651141 is 14115619.

It is an a-pointer prime, because the next prime (91651169) can be obtained adding 91651141 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51696100 + 39955041 = 7190^2 + 6321^2 .

It is a cyclic number.

It is not a de Polignac number, because 91651141 - 2¹⁹ = 91126853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91651121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45825570 + 45825571.

It is an arithmetic number, because the mean of its divisors is an integer number (45825571).

Almost surely, 2^91651141 is an apocalyptic number.

It is an amenable number.

91651141 is a deficient number, since it is larger than the sum of its proper divisors (1).

91651141 is an equidigital number, since it uses as much as digits as its factorization.

91651141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 28.

The square root of 91651141 is about 9573.4602417308. The cubic root of 91651141 is about 450.8644141861.

The spelling of 91651141 in words is "ninety-one million, six hundred fifty-one thousand, one hundred forty-one".