56385389 has 2 divisors, whose sum is σ = 56385390. Its totient is φ = 56385388.

The previous prime is 56385377. The next prime is 56385401. The reversal of 56385389 is 98358365.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (56385377) and next prime (56385401).

It can be written as a sum of positive squares in only one way, i.e., 37393225 + 18992164 = 6115^2 + 4358^2 .

It is a cyclic number.

It is not a de Polignac number, because 56385389 - 2¹² = 56381293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56385349) 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, 28192694 + 28192695.

It is an arithmetic number, because the mean of its divisors is an integer number (28192695).

Almost surely, 2^56385389 is an apocalyptic number.

It is an amenable number.

56385389 is a deficient number, since it is larger than the sum of its proper divisors (1).

56385389 is an equidigital number, since it uses as much as digits as its factorization.

56385389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 47.

The square root of 56385389 is about 7509.0205086949. The cubic root of 56385389 is about 383.4618769073.

The spelling of 56385389 in words is "fifty-six million, three hundred eighty-five thousand, three hundred eighty-nine".