56783 has 2 divisors, whose sum is σ = 56784.
Its totient is φ = 56782.
The previous prime is 56779. The next prime is 56807. The reversal of 56783 is 38765.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 56783 - 22 = 56779 is a prime.
It is a Sophie Germain prime.
It is an alternating number because its digits alternate between odd and even.
It is a plaindrome in base 14.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (56713) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28391 + 28392.
It is an arithmetic number, because the mean of its divisors is an integer number (28392).
256783 is an apocalyptic number.
56783 is a deficient number, since it is larger than the sum of its proper divisors (1).
56783 is an equidigital number, since it uses as much as digits as its factorization.
56783 is an evil number, because the sum of its binary digits is even.
The product of its digits is 5040, while the sum is 29.
The square root of 56783 is about 238.2918378795.
The cubic root of 56783 is about 38.4361115016.
The spelling of 56783 in words is "fifty-six thousand, seven hundred eighty-three".