56047843 has 2 divisors, whose sum is σ = 56047844. Its totient is φ = 56047842.

The previous prime is 56047769. The next prime is 56047847. The reversal of 56047843 is 34874065.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56047843 is a prime.

It is not a weakly prime, because it can be changed into another prime (56047847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28023921 + 28023922.

It is an arithmetic number, because the mean of its divisors is an integer number (28023922).

Almost surely, 2^56047843 is an apocalyptic number.

56047843 is a deficient number, since it is larger than the sum of its proper divisors (1).

56047843 is an equidigital number, since it uses as much as digits as its factorization.

56047843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 56047843 is about 7486.5107359838. The cubic root of 56047843 is about 382.6951583590.

Subtracting from 56047843 its reverse (34874065), we obtain a triangular number (21173778 = T₆₅₀₇).

The spelling of 56047843 in words is "fifty-six million, forty-seven thousand, eight hundred forty-three".