127671161 has 2 divisors, whose sum is σ = 127671162. Its totient is φ = 127671160.

The previous prime is 127671157. The next prime is 127671163. The reversal of 127671161 is 161176721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104448400 + 23222761 = 10220^2 + 4819^2 .

It is an emirp because it is prime and its reverse (161176721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127671161 - 2² = 127671157 is a prime.

Together with 127671163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (127671163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63835580 + 63835581.

It is an arithmetic number, because the mean of its divisors is an integer number (63835581).

Almost surely, 2^127671161 is an apocalyptic number.

It is an amenable number.

127671161 is a deficient number, since it is larger than the sum of its proper divisors (1).

127671161 is an equidigital number, since it uses as much as digits as its factorization.

127671161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 32.

The square root of 127671161 is about 11299.1663851808. The cubic root of 127671161 is about 503.5364757065.

The spelling of 127671161 in words is "one hundred twenty-seven million, six hundred seventy-one thousand, one hundred sixty-one".