56427731 has 2 divisors, whose sum is σ = 56427732. Its totient is φ = 56427730.

The previous prime is 56427727. The next prime is 56427733. The reversal of 56427731 is 13772465.

56427731 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 56427731 - 2² = 56427727 is a prime.

It is a super-2 number, since 2×56427731² = 6368177651616722, which contains 22 as substring.

Together with 56427733, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 56427691 and 56427700.

It is not a weakly prime, because it can be changed into another prime (56427733) 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, 28213865 + 28213866.

It is an arithmetic number, because the mean of its divisors is an integer number (28213866).

Almost surely, 2^56427731 is an apocalyptic number.

56427731 is a deficient number, since it is larger than the sum of its proper divisors (1).

56427731 is an equidigital number, since it uses as much as digits as its factorization.

56427731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 35.

The square root of 56427731 is about 7511.8393885919. The cubic root of 56427731 is about 383.5578384118.

The spelling of 56427731 in words is "fifty-six million, four hundred twenty-seven thousand, seven hundred thirty-one".