127051649 has 2 divisors, whose sum is σ = 127051650. Its totient is φ = 127051648.

The previous prime is 127051619. The next prime is 127051657. The reversal of 127051649 is 946150721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82228624 + 44823025 = 9068^2 + 6695^2 .

It is a cyclic number.

It is not a de Polignac number, because 127051649 - 2¹² = 127047553 is a prime.

It is a super-2 number, since 2×127051649² = 32284243027238402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (127051619) 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, 63525824 + 63525825.

It is an arithmetic number, because the mean of its divisors is an integer number (63525825).

Almost surely, 2^127051649 is an apocalyptic number.

It is an amenable number.

127051649 is a deficient number, since it is larger than the sum of its proper divisors (1).

127051649 is an equidigital number, since it uses as much as digits as its factorization.

127051649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 127051649 is about 11271.7189904646. The cubic root of 127051649 is about 502.7207007229.

The spelling of 127051649 in words is "one hundred twenty-seven million, fifty-one thousand, six hundred forty-nine".