99775171 has 4 divisors (see below), whose sum is σ = 99882144. Its totient is φ = 99668200.

The previous prime is 99775163. The next prime is 99775177. The reversal of 99775171 is 17157799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17157799 = 109 ⋅157411.

It is a cyclic number.

It is not a de Polignac number, because 99775171 - 2³ = 99775163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99775177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52075 + ... + 53956.

It is an arithmetic number, because the mean of its divisors is an integer number (24970536).

Almost surely, 2^99775171 is an apocalyptic number.

99775171 is a deficient number, since it is larger than the sum of its proper divisors (106973).

99775171 is a wasteful number, since it uses less digits than its factorization.

99775171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106972.

The product of its digits is 138915, while the sum is 46.

The square root of 99775171 is about 9988.7522243772. The cubic root of 99775171 is about 463.8107677505.

The spelling of 99775171 in words is "ninety-nine million, seven hundred seventy-five thousand, one hundred seventy-one".