91380059 has 2 divisors, whose sum is σ = 91380060. Its totient is φ = 91380058.

The previous prime is 91380019. The next prime is 91380077. The reversal of 91380059 is 95008319.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91380059 - 2⁸ = 91379803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91380019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45690029 + 45690030.

It is an arithmetic number, because the mean of its divisors is an integer number (45690030).

Almost surely, 2^91380059 is an apocalyptic number.

91380059 is a deficient number, since it is larger than the sum of its proper divisors (1).

91380059 is an equidigital number, since it uses as much as digits as its factorization.

91380059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 91380059 is about 9559.2917624686. The cubic root of 91380059 is about 450.4194590933.

The spelling of 91380059 in words is "ninety-one million, three hundred eighty thousand, fifty-nine".