56043947 has 2 divisors, whose sum is σ = 56043948. Its totient is φ = 56043946.

The previous prime is 56043913. The next prime is 56043971. The reversal of 56043947 is 74934065.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56043947 - 2²⁰ = 54995371 is a prime.

It is a super-3 number, since 3×56043947³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56043947.

It is not a weakly prime, because it can be changed into another prime (56043907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28021973 + 28021974.

It is an arithmetic number, because the mean of its divisors is an integer number (28021974).

Almost surely, 2^56043947 is an apocalyptic number.

56043947 is a deficient number, since it is larger than the sum of its proper divisors (1).

56043947 is an equidigital number, since it uses as much as digits as its factorization.

56043947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 56043947 is about 7486.2505301386. The cubic root of 56043947 is about 382.6862908463.

The spelling of 56043947 in words is "fifty-six million, forty-three thousand, nine hundred forty-seven".