56646439 has 2 divisors, whose sum is σ = 56646440. Its totient is φ = 56646438.

The previous prime is 56646419. The next prime is 56646449. The reversal of 56646439 is 93464665.

56646439 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 is a cyclic number.

It is not a de Polignac number, because 56646439 - 2⁵ = 56646407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56646395 and 56646404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56646409) 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, 28323219 + 28323220.

It is an arithmetic number, because the mean of its divisors is an integer number (28323220).

Almost surely, 2^56646439 is an apocalyptic number.

56646439 is a deficient number, since it is larger than the sum of its proper divisors (1).

56646439 is an equidigital number, since it uses as much as digits as its factorization.

56646439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 43.

The square root of 56646439 is about 7526.3828629694. The cubic root of 56646439 is about 384.0527429543.

The spelling of 56646439 in words is "fifty-six million, six hundred forty-six thousand, four hundred thirty-nine".