56417255109217 has 4 divisors (see below), whose sum is σ = 58362677699220. Its totient is φ = 54471832519216.

The previous prime is 56417255109211. The next prime is 56417255109227. The reversal of 56417255109217 is 71290155271465.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15211177822801 + 41206077286416 = 3900151^2 + 6419196^2 .

It is a cyclic number.

It is not a de Polignac number, because 56417255109217 - 2²³ = 56417246720609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56417255109211) 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, 972711294958 + ... + 972711295015.

It is an arithmetic number, because the mean of its divisors is an integer number (14590669424805).

Almost surely, 2^{56417255109217} is an apocalyptic number.

It is an amenable number.

56417255109217 is a deficient number, since it is larger than the sum of its proper divisors (1945422590003).

56417255109217 is a wasteful number, since it uses less digits than its factorization.

56417255109217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945422590002.

The product of its (nonzero) digits is 5292000, while the sum is 55.

The spelling of 56417255109217 in words is "fifty-six trillion, four hundred seventeen billion, two hundred fifty-five million, one hundred nine thousand, two hundred seventeen".