104815217 has 16 divisors (see below), whose sum is σ = 122072832. Its totient is φ = 89114880.

The previous prime is 104815199. The next prime is 104815219. The reversal of 104815217 is 712518401.

It is a cyclic number.

It is not a de Polignac number, because 104815217 - 2¹⁶ = 104749681 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104815217.

It is not an unprimeable number, because it can be changed into a prime (104815219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5342 + ... + 15432.

It is an arithmetic number, because the mean of its divisors is an integer number (7629552).

Almost surely, 2^104815217 is an apocalyptic number.

104815217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

104815217 is a deficient number, since it is larger than the sum of its proper divisors (17257615).

104815217 is a wasteful number, since it uses less digits than its factorization.

104815217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10168.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 104815217 is about 10237.9303084168. The cubic root of 104815217 is about 471.4924896105.

The spelling of 104815217 in words is "one hundred four million, eight hundred fifteen thousand, two hundred seventeen".