91291041 has 12 divisors (see below), whose sum is σ = 132415140. Its totient is φ = 60606720.

The previous prime is 91291033. The next prime is 91291073. The reversal of 91291041 is 14019219.

It can be written as a sum of positive squares in 2 ways, for example, as 83338641 + 7952400 = 9129^2 + 2820^2 .

It is not a de Polignac number, because 91291041 - 2³ = 91291033 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91290996 and 91291014.

It is not an unprimeable number, because it can be changed into a prime (91291091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18876 + ... + 23213.

It is an arithmetic number, because the mean of its divisors is an integer number (11034595).

Almost surely, 2^91291041 is an apocalyptic number.

It is an amenable number.

91291041 is a deficient number, since it is larger than the sum of its proper divisors (41124099).

91291041 is a wasteful number, since it uses less digits than its factorization.

91291041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42336 (or 42333 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 91291041 is about 9554.6345299022. The cubic root of 91291041 is about 450.2731526797.

The spelling of 91291041 in words is "ninety-one million, two hundred ninety-one thousand, forty-one".