91496257 has 2 divisors, whose sum is σ = 91496258. Its totient is φ = 91496256.

The previous prime is 91496243. The next prime is 91496287. The reversal of 91496257 is 75269419.

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., 91087936 + 408321 = 9544^2 + 639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91496257 is a prime.

It is not a weakly prime, because it can be changed into another prime (91496287) 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, 45748128 + 45748129.

It is an arithmetic number, because the mean of its divisors is an integer number (45748129).

Almost surely, 2^91496257 is an apocalyptic number.

It is an amenable number.

91496257 is a deficient number, since it is larger than the sum of its proper divisors (1).

91496257 is an equidigital number, since it uses as much as digits as its factorization.

91496257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The square root of 91496257 is about 9565.3675831094. The cubic root of 91496257 is about 450.6102945719.

The spelling of 91496257 in words is "ninety-one million, four hundred ninety-six thousand, two hundred fifty-seven".