56683813 has 2 divisors, whose sum is σ = 56683814. Its totient is φ = 56683812.

The previous prime is 56683811. The next prime is 56683819. The reversal of 56683813 is 31838665.

56683813 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., 48748324 + 7935489 = 6982^2 + 2817^2 .

It is a cyclic number.

It is not a de Polignac number, because 56683813 - 2¹ = 56683811 is a prime.

Together with 56683811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56683811) 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, 28341906 + 28341907.

It is an arithmetic number, because the mean of its divisors is an integer number (28341907).

Almost surely, 2^56683813 is an apocalyptic number.

It is an amenable number.

56683813 is a deficient number, since it is larger than the sum of its proper divisors (1).

56683813 is an equidigital number, since it uses as much as digits as its factorization.

56683813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 56683813 is about 7528.8653195551. The cubic root of 56683813 is about 384.1371874013.

The spelling of 56683813 in words is "fifty-six million, six hundred eighty-three thousand, eight hundred thirteen".