91574403241 has 2 divisors, whose sum is σ = 91574403242. Its totient is φ = 91574403240.

The previous prime is 91574403223. The next prime is 91574403287. The reversal of 91574403241 is 14230447519.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89179279641 + 2395123600 = 298629^2 + 48940^2 .

It is a cyclic number.

It is not a de Polignac number, because 91574403241 - 2¹³ = 91574395049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91574403194 and 91574403203.

It is not a weakly prime, because it can be changed into another prime (91574403941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45787201620 + 45787201621.

It is an arithmetic number, because the mean of its divisors is an integer number (45787201621).

Almost surely, 2^91574403241 is an apocalyptic number.

It is an amenable number.

91574403241 is a deficient number, since it is larger than the sum of its proper divisors (1).

91574403241 is an equidigital number, since it uses as much as digits as its factorization.

91574403241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 91574403241 in words is "ninety-one billion, five hundred seventy-four million, four hundred three thousand, two hundred forty-one".