56217323447 has 2 divisors, whose sum is σ = 56217323448. Its totient is φ = 56217323446.

The previous prime is 56217323411. The next prime is 56217323467. The reversal of 56217323447 is 74432371265.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56217323447 - 2¹⁶ = 56217257911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56217323398 and 56217323407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56217323467) 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, 28108661723 + 28108661724.

It is an arithmetic number, because the mean of its divisors is an integer number (28108661724).

Almost surely, 2^56217323447 is an apocalyptic number.

56217323447 is a deficient number, since it is larger than the sum of its proper divisors (1).

56217323447 is an equidigital number, since it uses as much as digits as its factorization.

56217323447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 44.

The spelling of 56217323447 in words is "fifty-six billion, two hundred seventeen million, three hundred twenty-three thousand, four hundred forty-seven".