127545731 has 2 divisors, whose sum is σ = 127545732. Its totient is φ = 127545730.

The previous prime is 127545721. The next prime is 127545751. The reversal of 127545731 is 137545721.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127545731 is a prime.

It is a super-2 number, since 2×127545731² = 32535826992648722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 127545691 and 127545700.

It is not a weakly prime, because it can be changed into another prime (127545721) 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, 63772865 + 63772866.

It is an arithmetic number, because the mean of its divisors is an integer number (63772866).

Almost surely, 2^127545731 is an apocalyptic number.

127545731 is a deficient number, since it is larger than the sum of its proper divisors (1).

127545731 is an equidigital number, since it uses as much as digits as its factorization.

127545731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 35.

The square root of 127545731 is about 11293.6146118061. The cubic root of 127545731 is about 503.3715225716.

The spelling of 127545731 in words is "one hundred twenty-seven million, five hundred forty-five thousand, seven hundred thirty-one".