127717157 has 2 divisors, whose sum is σ = 127717158. Its totient is φ = 127717156.

The previous prime is 127717127. The next prime is 127717199. The reversal of 127717157 is 751717721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107205316 + 20511841 = 10354^2 + 4529^2 .

It is an emirp because it is prime and its reverse (751717721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127717157 - 2¹⁶ = 127651621 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127717157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127717127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63858578 + 63858579.

It is an arithmetic number, because the mean of its divisors is an integer number (63858579).

Almost surely, 2^127717157 is an apocalyptic number.

It is an amenable number.

127717157 is a deficient number, since it is larger than the sum of its proper divisors (1).

127717157 is an equidigital number, since it uses as much as digits as its factorization.

127717157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24010, while the sum is 38.

The square root of 127717157 is about 11301.2015732841. The cubic root of 127717157 is about 503.5969380243.

The spelling of 127717157 in words is "one hundred twenty-seven million, seven hundred seventeen thousand, one hundred fifty-seven".