127157447 has 2 divisors, whose sum is σ = 127157448. Its totient is φ = 127157446.

The previous prime is 127157423. The next prime is 127157453. The reversal of 127157447 is 744751721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127157447 - 2⁶ = 127157383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127157447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127157477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63578723 + 63578724.

It is an arithmetic number, because the mean of its divisors is an integer number (63578724).

Almost surely, 2^127157447 is an apocalyptic number.

127157447 is a deficient number, since it is larger than the sum of its proper divisors (1).

127157447 is an equidigital number, since it uses as much as digits as its factorization.

127157447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54880, while the sum is 38.

The square root of 127157447 is about 11276.4110868662. The cubic root of 127157447 is about 502.8602032762.

The spelling of 127157447 in words is "one hundred twenty-seven million, one hundred fifty-seven thousand, four hundred forty-seven".