56000731 has 2 divisors, whose sum is σ = 56000732. Its totient is φ = 56000730.

The previous prime is 56000729. The next prime is 56000741. The reversal of 56000731 is 13700065.

56000731 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 is a cyclic number.

It is not a de Polignac number, because 56000731 - 2¹ = 56000729 is a prime.

It is a super-2 number, since 2×56000731² = 6272163745068722, which contains 22 as substring.

Together with 56000729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56000741) 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, 28000365 + 28000366.

It is an arithmetic number, because the mean of its divisors is an integer number (28000366).

Almost surely, 2^56000731 is an apocalyptic number.

56000731 is a deficient number, since it is larger than the sum of its proper divisors (1).

56000731 is an equidigital number, since it uses as much as digits as its factorization.

56000731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 56000731 is about 7483.3636153805. The cubic root of 56000731 is about 382.5879012528.

Adding to 56000731 its reverse (13700065), we get a palindrome (69700796).

The spelling of 56000731 in words is "fifty-six million, seven hundred thirty-one", and thus it is an aban number.