56556847 has 2 divisors, whose sum is σ = 56556848. Its totient is φ = 56556846.

The previous prime is 56556833. The next prime is 56556859. The reversal of 56556847 is 74865565.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56556847 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 56556797 and 56556806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56556347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28278423 + 28278424.

It is an arithmetic number, because the mean of its divisors is an integer number (28278424).

Almost surely, 2^56556847 is an apocalyptic number.

56556847 is a deficient number, since it is larger than the sum of its proper divisors (1).

56556847 is an equidigital number, since it uses as much as digits as its factorization.

56556847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008000, while the sum is 46.

The square root of 56556847 is about 7520.4286446984. The cubic root of 56556847 is about 383.8501635287.

The spelling of 56556847 in words is "fifty-six million, five hundred fifty-six thousand, eight hundred forty-seven".