171117127 has 2 divisors, whose sum is σ = 171117128. Its totient is φ = 171117126.

The previous prime is 171117109. The next prime is 171117161. The reversal of 171117127 is 721711171.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 171117127 - 2⁷ = 171116999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 171117095 and 171117104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171117187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85558563 + 85558564.

It is an arithmetic number, because the mean of its divisors is an integer number (85558564).

Almost surely, 2^171117127 is an apocalyptic number.

171117127 is a deficient number, since it is larger than the sum of its proper divisors (1).

171117127 is an equidigital number, since it uses as much as digits as its factorization.

171117127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 686, while the sum is 28.

The square root of 171117127 is about 13081.1745267770. The cubic root of 171117127 is about 555.1766091084.

Adding to 171117127 its reverse (721711171), we get a palindrome (892828298).

The spelling of 171117127 in words is "one hundred seventy-one million, one hundred seventeen thousand, one hundred twenty-seven".