127385257 has 2 divisors, whose sum is σ = 127385258. Its totient is φ = 127385256.

The previous prime is 127385249. The next prime is 127385287. The reversal of 127385257 is 752583721.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112975641 + 14409616 = 10629^2 + 3796^2 .

It is a cyclic number.

It is not a de Polignac number, because 127385257 - 2³ = 127385249 is a prime.

It is not a weakly prime, because it can be changed into another prime (127385207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63692628 + 63692629.

It is an arithmetic number, because the mean of its divisors is an integer number (63692629).

Almost surely, 2^127385257 is an apocalyptic number.

It is an amenable number.

127385257 is a deficient number, since it is larger than the sum of its proper divisors (1).

127385257 is an equidigital number, since it uses as much as digits as its factorization.

127385257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 40.

The square root of 127385257 is about 11286.5077415470. The cubic root of 127385257 is about 503.1603252694.

The spelling of 127385257 in words is "one hundred twenty-seven million, three hundred eighty-five thousand, two hundred fifty-seven".