91045050541 has 2 divisors, whose sum is σ = 91045050542. Its totient is φ = 91045050540.

The previous prime is 91045050539. The next prime is 91045050559. The reversal of 91045050541 is 14505054019.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82356946441 + 8688104100 = 286979^2 + 93210^2 .

It is a cyclic number.

It is not a de Polignac number, because 91045050541 - 2¹ = 91045050539 is a prime.

Together with 91045050539, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 91045050497 and 91045050506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91045050841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45522525270 + 45522525271.

It is an arithmetic number, because the mean of its divisors is an integer number (45522525271).

Almost surely, 2^91045050541 is an apocalyptic number.

It is an amenable number.

91045050541 is a deficient number, since it is larger than the sum of its proper divisors (1).

91045050541 is an equidigital number, since it uses as much as digits as its factorization.

91045050541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 34.

The spelling of 91045050541 in words is "ninety-one billion, forty-five million, fifty thousand, five hundred forty-one".