56788889 has 2 divisors, whose sum is σ = 56788890.
Its totient is φ = 56788888.
The previous prime is 56788883. The next prime is 56788903. The reversal of 56788889 is 98888765.
56788889 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., 52345225 + 4443664 = 7235^2 + 2108^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-56788889 is a prime.
It is a plaindrome in base 10.
It is not a weakly prime, because it can be changed into another prime (56788883) 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, 28394444 + 28394445.
It is an arithmetic number, because the mean of its divisors is an integer number (28394445).
Almost surely, 256788889 is an apocalyptic number.
It is an amenable number.
56788889 is a deficient number, since it is larger than the sum of its proper divisors (1).
56788889 is an equidigital number, since it uses as much as digits as its factorization.
56788889 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 7741440, while the sum is 59.
The square root of 56788889 is about 7535.8402982017.
The cubic root of 56788889 is about 384.3744019996.
The spelling of 56788889 in words is "fifty-six million, seven hundred eighty-eight thousand, eight hundred eighty-nine".