56389129 has 2 divisors, whose sum is σ = 56389130. Its totient is φ = 56389128.

The previous prime is 56389127. The next prime is 56389139. The reversal of 56389129 is 92198365.

It is a happy number.

56389129 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., 56250000 + 139129 = 7500^2 + 373^2 .

It is a cyclic number.

It is not a de Polignac number, because 56389129 - 2¹ = 56389127 is a prime.

Together with 56389127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56389127) 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, 28194564 + 28194565.

It is an arithmetic number, because the mean of its divisors is an integer number (28194565).

Almost surely, 2^56389129 is an apocalyptic number.

It is an amenable number.

56389129 is a deficient number, since it is larger than the sum of its proper divisors (1).

56389129 is an equidigital number, since it uses as much as digits as its factorization.

56389129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 43.

The square root of 56389129 is about 7509.2695383772. The cubic root of 56389129 is about 383.4703549648.

The spelling of 56389129 in words is "fifty-six million, three hundred eighty-nine thousand, one hundred twenty-nine".