91538059 has 2 divisors, whose sum is σ = 91538060. Its totient is φ = 91538058.

The previous prime is 91538053. The next prime is 91538063. The reversal of 91538059 is 95083519.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91538059 - 2⁷ = 91537931 is a prime.

It is not a weakly prime, because it can be changed into another prime (91538053) 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, 45769029 + 45769030.

It is an arithmetic number, because the mean of its divisors is an integer number (45769030).

Almost surely, 2^91538059 is an apocalyptic number.

91538059 is a deficient number, since it is larger than the sum of its proper divisors (1).

91538059 is an equidigital number, since it uses as much as digits as its factorization.

91538059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 91538059 is about 9567.5524038283. The cubic root of 91538059 is about 450.6789077380.

The spelling of 91538059 in words is "ninety-one million, five hundred thirty-eight thousand, fifty-nine".