56575661217 has 8 divisors (see below), whose sum is σ = 75435376224. Its totient is φ = 37716526848.

The previous prime is 56575661209. The next prime is 56575661249. The reversal of 56575661217 is 71216657565.

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

It is not a de Polignac number, because 56575661217 - 2³ = 56575661209 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 56575661217.

It is not an unprimeable number, because it can be changed into a prime (56575661117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198273 + ... + 390465.

It is an arithmetic number, because the mean of its divisors is an integer number (9429422028).

Almost surely, 2^56575661217 is an apocalyptic number.

It is an amenable number.

56575661217 is a deficient number, since it is larger than the sum of its proper divisors (18859715007).

56575661217 is a wasteful number, since it uses less digits than its factorization.

56575661217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290319.

The product of its digits is 2646000, while the sum is 51.

The spelling of 56575661217 in words is "fifty-six billion, five hundred seventy-five million, six hundred sixty-one thousand, two hundred seventeen".