56217047 has 8 divisors (see below), whose sum is σ = 57398544. Its totient is φ = 55040128.

The previous prime is 56217041. The next prime is 56217059. The reversal of 56217047 is 74071265.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56217047 - 2⁸ = 56216791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56217041) 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 in 7 ways as a sum of consecutive naturals, for example, 35423 + ... + 36975.

It is an arithmetic number, because the mean of its divisors is an integer number (7174818).

Almost surely, 2^56217047 is an apocalyptic number.

56217047 is a deficient number, since it is larger than the sum of its proper divisors (1181497).

56217047 is a wasteful number, since it uses less digits than its factorization.

56217047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2289.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 56217047 is about 7497.8028114908. The cubic root of 56217047 is about 383.0798802634.

The spelling of 56217047 in words is "fifty-six million, two hundred seventeen thousand, forty-seven".