56042552217 has 4 divisors (see below), whose sum is σ = 74723402960. Its totient is φ = 37361701476.

The previous prime is 56042552213. The next prime is 56042552219. The reversal of 56042552217 is 71225524065.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56042552217 - 2² = 56042552213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56042552213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9340425367 + ... + 9340425372.

It is an arithmetic number, because the mean of its divisors is an integer number (18680850740).

Almost surely, 2^56042552217 is an apocalyptic number.

It is an amenable number.

56042552217 is a deficient number, since it is larger than the sum of its proper divisors (18680850743).

56042552217 is a wasteful number, since it uses less digits than its factorization.

56042552217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18680850742.

The product of its (nonzero) digits is 168000, while the sum is 39.

The spelling of 56042552217 in words is "fifty-six billion, forty-two million, five hundred fifty-two thousand, two hundred seventeen".