95171991 has 4 divisors (see below), whose sum is σ = 126895992. Its totient is φ = 63447992.

The previous prime is 95171981. The next prime is 95172019. The reversal of 95171991 is 19917159.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 95171991 - 2⁶ = 95171927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (95171911) 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, 15861996 + ... + 15862001.

It is an arithmetic number, because the mean of its divisors is an integer number (31723998).

Almost surely, 2^95171991 is an apocalyptic number.

95171991 is a deficient number, since it is larger than the sum of its proper divisors (31724001).

95171991 is a wasteful number, since it uses less digits than its factorization.

95171991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31724000.

The product of its digits is 25515, while the sum is 42.

The square root of 95171991 is about 9755.6133072196. The cubic root of 95171991 is about 456.5654582991.

The spelling of 95171991 in words is "ninety-five million, one hundred seventy-one thousand, nine hundred ninety-one".