56499871 has 2 divisors, whose sum is σ = 56499872. Its totient is φ = 56499870.

The previous prime is 56499869. The next prime is 56499889. The reversal of 56499871 is 17899465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56499871 - 2¹ = 56499869 is a prime.

Together with 56499869, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56499811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28249935 + 28249936.

It is an arithmetic number, because the mean of its divisors is an integer number (28249936).

Almost surely, 2^56499871 is an apocalyptic number.

56499871 is a deficient number, since it is larger than the sum of its proper divisors (1).

56499871 is an equidigital number, since it uses as much as digits as its factorization.

56499871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 49.

The square root of 56499871 is about 7516.6396082292. The cubic root of 56499871 is about 383.7212219044.

The spelling of 56499871 in words is "fifty-six million, four hundred ninety-nine thousand, eight hundred seventy-one".