127663541 has 2 divisors, whose sum is σ = 127663542. Its totient is φ = 127663540.

The previous prime is 127663531. The next prime is 127663567. The reversal of 127663541 is 145366721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113337316 + 14326225 = 10646^2 + 3785^2 .

It is a cyclic number.

It is not a de Polignac number, because 127663541 - 2⁶ = 127663477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127663511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63831770 + 63831771.

It is an arithmetic number, because the mean of its divisors is an integer number (63831771).

Almost surely, 2^127663541 is an apocalyptic number.

It is an amenable number.

127663541 is a deficient number, since it is larger than the sum of its proper divisors (1).

127663541 is an equidigital number, since it uses as much as digits as its factorization.

127663541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 127663541 is about 11298.8291871326. The cubic root of 127663541 is about 503.5264577190.

The spelling of 127663541 in words is "one hundred twenty-seven million, six hundred sixty-three thousand, five hundred forty-one".