91137041 has 2 divisors, whose sum is σ = 91137042. Its totient is φ = 91137040.

The previous prime is 91137023. The next prime is 91137043. The reversal of 91137041 is 14073119.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73530625 + 17606416 = 8575^2 + 4196^2 .

It is an emirp because it is prime and its reverse (14073119) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91137041 is a prime.

Together with 91137043, it forms a pair of twin primes.

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 91137041.

It is not a weakly prime, because it can be changed into another prime (91137043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45568520 + 45568521.

It is an arithmetic number, because the mean of its divisors is an integer number (45568521).

Almost surely, 2^91137041 is an apocalyptic number.

It is an amenable number.

91137041 is a deficient number, since it is larger than the sum of its proper divisors (1).

91137041 is an equidigital number, since it uses as much as digits as its factorization.

91137041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 91137041 is about 9546.5722120560. The cubic root of 91137041 is about 450.0198197032.

The spelling of 91137041 in words is "ninety-one million, one hundred thirty-seven thousand, forty-one".