56784289 has 2 divisors, whose sum is σ = 56784290. Its totient is φ = 56784288.

The previous prime is 56784271. The next prime is 56784323. The reversal of 56784289 is 98248765.

56784289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54169600 + 2614689 = 7360^2 + 1617^2 .

It is a cyclic number.

It is not a de Polignac number, because 56784289 - 2⁵ = 56784257 is a prime.

It is not a weakly prime, because it can be changed into another prime (56784239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28392144 + 28392145.

It is an arithmetic number, because the mean of its divisors is an integer number (28392145).

Almost surely, 2^56784289 is an apocalyptic number.

It is an amenable number.

56784289 is a deficient number, since it is larger than the sum of its proper divisors (1).

56784289 is an equidigital number, since it uses as much as digits as its factorization.

56784289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 49.

The square root of 56784289 is about 7535.5350838544. The cubic root of 56784289 is about 384.3640233850.

The spelling of 56784289 in words is "fifty-six million, seven hundred eighty-four thousand, two hundred eighty-nine".