104555257217 has 4 divisors (see below), whose sum is σ = 104556129216. Its totient is φ = 104554385220.

The previous prime is 104555257201. The next prime is 104555257229. The reversal of 104555257217 is 712752555401.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 712752555401 = 40177 ⋅17740313.

It is a cyclic number.

It is not a de Polignac number, because 104555257217 - 2⁴ = 104555257201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104555253217) 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, 220709 + ... + 507762.

It is an arithmetic number, because the mean of its divisors is an integer number (26139032304).

Almost surely, 2^104555257217 is an apocalyptic number.

It is an amenable number.

104555257217 is a deficient number, since it is larger than the sum of its proper divisors (871999).

104555257217 is an equidigital number, since it uses as much as digits as its factorization.

104555257217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871998.

The product of its (nonzero) digits is 490000, while the sum is 44.

The spelling of 104555257217 in words is "one hundred four billion, five hundred fifty-five million, two hundred fifty-seven thousand, two hundred seventeen".