56128847 has 2 divisors, whose sum is σ = 56128848. Its totient is φ = 56128846.

The previous prime is 56128823. The next prime is 56128903. The reversal of 56128847 is 74882165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56128847 - 2⁶ = 56128783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56128447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28064423 + 28064424.

It is an arithmetic number, because the mean of its divisors is an integer number (28064424).

Almost surely, 2^56128847 is an apocalyptic number.

56128847 is a deficient number, since it is larger than the sum of its proper divisors (1).

56128847 is an equidigital number, since it uses as much as digits as its factorization.

56128847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 41.

The square root of 56128847 is about 7491.9187795918. The cubic root of 56128847 is about 382.8794349496.

The spelling of 56128847 in words is "fifty-six million, one hundred twenty-eight thousand, eight hundred forty-seven".