91050067 has 2 divisors, whose sum is σ = 91050068. Its totient is φ = 91050066.

The previous prime is 91050061. The next prime is 91050083. The reversal of 91050067 is 76005019.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (76005019) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91050067 - 2¹⁹ = 90525779 is a prime.

It is a super-2 number, since 2×91050067² = 16580229401408978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (91050061) 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, 45525033 + 45525034.

It is an arithmetic number, because the mean of its divisors is an integer number (45525034).

Almost surely, 2^91050067 is an apocalyptic number.

91050067 is a deficient number, since it is larger than the sum of its proper divisors (1).

91050067 is an equidigital number, since it uses as much as digits as its factorization.

91050067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 91050067 is about 9542.0158771614. The cubic root of 91050067 is about 449.8766196728.

The spelling of 91050067 in words is "ninety-one million, fifty thousand, sixty-seven".