91354013 has 2 divisors, whose sum is σ = 91354014. Its totient is φ = 91354012.

The previous prime is 91354009. The next prime is 91354019. The reversal of 91354013 is 31045319.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86527204 + 4826809 = 9302^2 + 2197^2 .

It is an emirp because it is prime and its reverse (31045319) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91354013 - 2² = 91354009 is a prime.

It is a Chen prime.

It is equal to p_5291027 and since 91354013 and 5291027 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91354019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45677006 + 45677007.

It is an arithmetic number, because the mean of its divisors is an integer number (45677007).

Almost surely, 2^91354013 is an apocalyptic number.

It is an amenable number.

91354013 is a deficient number, since it is larger than the sum of its proper divisors (1).

91354013 is an equidigital number, since it uses as much as digits as its factorization.

91354013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 91354013 is about 9557.9293259576. The cubic root of 91354013 is about 450.3766607696.

The spelling of 91354013 in words is "ninety-one million, three hundred fifty-four thousand, thirteen".