56865047 has 4 divisors (see below), whose sum is σ = 56895336. Its totient is φ = 56834760.

The previous prime is 56865023. The next prime is 56865079. The reversal of 56865047 is 74056865.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56865047 - 2¹⁶ = 56799511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56864995 and 56865013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56865097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12128 + ... + 16149.

It is an arithmetic number, because the mean of its divisors is an integer number (14223834).

Almost surely, 2^56865047 is an apocalyptic number.

56865047 is a deficient number, since it is larger than the sum of its proper divisors (30289).

56865047 is a wasteful number, since it uses less digits than its factorization.

56865047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30288.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 56865047 is about 7540.8916581529. The cubic root of 56865047 is about 384.5461498547.

The spelling of 56865047 in words is "fifty-six million, eight hundred sixty-five thousand, forty-seven".