127655745 has 16 divisors (see below), whose sum is σ = 233427840. Its totient is φ = 58356864.

The previous prime is 127655741. The next prime is 127655753. The reversal of 127655745 is 547556721.

It is a happy number.

It is not a de Polignac number, because 127655745 - 2² = 127655741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 127655697 and 127655706.

It is not an unprimeable number, because it can be changed into a prime (127655741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607780 + ... + 607989.

It is an arithmetic number, because the mean of its divisors is an integer number (14589240).

Almost surely, 2^127655745 is an apocalyptic number.

127655745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127655745 is a deficient number, since it is larger than the sum of its proper divisors (105772095).

127655745 is a wasteful number, since it uses less digits than its factorization.

127655745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215784.

The product of its digits is 294000, while the sum is 42.

The square root of 127655745 is about 11298.4841903682. The cubic root of 127655745 is about 503.5162079323.

The spelling of 127655745 in words is "one hundred twenty-seven million, six hundred fifty-five thousand, seven hundred forty-five".