91125059 has 2 divisors, whose sum is σ = 91125060. Its totient is φ = 91125058.

The previous prime is 91125031. The next prime is 91125071. The reversal of 91125059 is 95052119.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91125059 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91125079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45562529 + 45562530.

It is an arithmetic number, because the mean of its divisors is an integer number (45562530).

Almost surely, 2^91125059 is an apocalyptic number.

91125059 is a deficient number, since it is larger than the sum of its proper divisors (1).

91125059 is an equidigital number, since it uses as much as digits as its factorization.

91125059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 91125059 is about 9545.9446363364. The cubic root of 91125059 is about 450.0000971193. Note that the first 4 decimals are identical.

The spelling of 91125059 in words is "ninety-one million, one hundred twenty-five thousand, fifty-nine".