56378489 has 2 divisors, whose sum is σ = 56378490. Its totient is φ = 56378488.

The previous prime is 56378459. The next prime is 56378501. The reversal of 56378489 is 98487365.

56378489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43454464 + 12924025 = 6592^2 + 3595^2 .

It is a cyclic number.

It is not a de Polignac number, because 56378489 - 2¹⁶ = 56312953 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (56378419) 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, 28189244 + 28189245.

It is an arithmetic number, because the mean of its divisors is an integer number (28189245).

Almost surely, 2^56378489 is an apocalyptic number.

It is an amenable number.

56378489 is a deficient number, since it is larger than the sum of its proper divisors (1).

56378489 is an equidigital number, since it uses as much as digits as its factorization.

56378489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 50.

The square root of 56378489 is about 7508.5610472314. The cubic root of 56378489 is about 383.4462345874.

The spelling of 56378489 in words is "fifty-six million, three hundred seventy-eight thousand, four hundred eighty-nine".