56807983 has 2 divisors, whose sum is σ = 56807984. Its totient is φ = 56807982.

The previous prime is 56807981. The next prime is 56808029. The reversal of 56807983 is 38970865.

It is an a-pointer prime, because the next prime (56808029) can be obtained adding 56807983 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56807983 - 2¹ = 56807981 is a prime.

Together with 56807981, 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 (56807981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28403991 + 28403992.

It is an arithmetic number, because the mean of its divisors is an integer number (28403992).

Almost surely, 2^56807983 is an apocalyptic number.

56807983 is a deficient number, since it is larger than the sum of its proper divisors (1).

56807983 is an equidigital number, since it uses as much as digits as its factorization.

56807983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 56807983 is about 7537.1070710187. The cubic root of 56807983 is about 384.4174762850.

The spelling of 56807983 in words is "fifty-six million, eight hundred seven thousand, nine hundred eighty-three".