91750097 has 4 divisors (see below), whose sum is σ = 92230656. Its totient is φ = 91269540.

The previous prime is 91750091. The next prime is 91750129. The reversal of 91750097 is 79005719.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91750097 - 2⁶ = 91750033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91750097.

It is not an unprimeable number, because it can be changed into a prime (91750091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239993 + ... + 240374.

It is an arithmetic number, because the mean of its divisors is an integer number (23057664).

Almost surely, 2^91750097 is an apocalyptic number.

It is an amenable number.

91750097 is a deficient number, since it is larger than the sum of its proper divisors (480559).

91750097 is a wasteful number, since it uses less digits than its factorization.

91750097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480558.

The product of its (nonzero) digits is 19845, while the sum is 38.

The square root of 91750097 is about 9578.6270936915. The cubic root of 91750097 is about 451.0266223553.

The spelling of 91750097 in words is "ninety-one million, seven hundred fifty thousand, ninety-seven".