127760081 has 2 divisors, whose sum is σ = 127760082. Its totient is φ = 127760080.

The previous prime is 127760077. The next prime is 127760093. The reversal of 127760081 is 180067721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121903681 + 5856400 = 11041^2 + 2420^2 .

It is an emirp because it is prime and its reverse (180067721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127760081 - 2² = 127760077 is a prime.

It is a super-2 number, since 2×127760081² = 32645276594253122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (127760011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63880040 + 63880041.

It is an arithmetic number, because the mean of its divisors is an integer number (63880041).

Almost surely, 2^127760081 is an apocalyptic number.

It is an amenable number.

127760081 is a deficient number, since it is larger than the sum of its proper divisors (1).

127760081 is an equidigital number, since it uses as much as digits as its factorization.

127760081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 127760081 is about 11303.1005038441. The cubic root of 127760081 is about 503.6533490664.

The spelling of 127760081 in words is "one hundred twenty-seven million, seven hundred sixty thousand, eighty-one".