56878543 has 2 divisors, whose sum is σ = 56878544. Its totient is φ = 56878542.

The previous prime is 56878513. The next prime is 56878553. The reversal of 56878543 is 34587865.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56878543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56878493 and 56878502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56878513) 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, 28439271 + 28439272.

It is an arithmetic number, because the mean of its divisors is an integer number (28439272).

Almost surely, 2^56878543 is an apocalyptic number.

56878543 is a deficient number, since it is larger than the sum of its proper divisors (1).

56878543 is an equidigital number, since it uses as much as digits as its factorization.

56878543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 806400, while the sum is 46.

The square root of 56878543 is about 7541.7864594538. The cubic root of 56878543 is about 384.5765693865.

The spelling of 56878543 in words is "fifty-six million, eight hundred seventy-eight thousand, five hundred forty-three".