56128727 has 2 divisors, whose sum is σ = 56128728. Its totient is φ = 56128726.

The previous prime is 56128703. The next prime is 56128739. The reversal of 56128727 is 72782165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56128727 - 2¹⁸ = 55866583 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56128757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28064363 + 28064364.

It is an arithmetic number, because the mean of its divisors is an integer number (28064364).

Almost surely, 2^56128727 is an apocalyptic number.

56128727 is a deficient number, since it is larger than the sum of its proper divisors (1).

56128727 is an equidigital number, since it uses as much as digits as its factorization.

56128727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 38.

The square root of 56128727 is about 7491.9107709582. The cubic root of 56128727 is about 382.8791620919.

The spelling of 56128727 in words is "fifty-six million, one hundred twenty-eight thousand, seven hundred twenty-seven".