56228647 has 2 divisors, whose sum is σ = 56228648. Its totient is φ = 56228646.

The previous prime is 56228609. The next prime is 56228659. The reversal of 56228647 is 74682265.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56228647 is a prime.

It is a super-3 number, since 3×56228647³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56228147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28114323 + 28114324.

It is an arithmetic number, because the mean of its divisors is an integer number (28114324).

Almost surely, 2^56228647 is an apocalyptic number.

56228647 is a deficient number, since it is larger than the sum of its proper divisors (1).

56228647 is an equidigital number, since it uses as much as digits as its factorization.

56228647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 40.

The square root of 56228647 is about 7498.5763315445. The cubic root of 56228647 is about 383.1062270819.

The spelling of 56228647 in words is "fifty-six million, two hundred twenty-eight thousand, six hundred forty-seven".