5217185217 has 4 divisors (see below), whose sum is σ = 6956246960. Its totient is φ = 3478123476.

The previous prime is 5217185213. The next prime is 5217185257. The reversal of 5217185217 is 7125817125.

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 5217185217 - 2² = 5217185213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5217185213) 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, 869530867 + ... + 869530872.

It is an arithmetic number, because the mean of its divisors is an integer number (1739061740).

Almost surely, 2^5217185217 is an apocalyptic number.

It is an amenable number.

5217185217 is a deficient number, since it is larger than the sum of its proper divisors (1739061743).

5217185217 is a wasteful number, since it uses less digits than its factorization.

5217185217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739061742.

The product of its digits is 39200, while the sum is 39.

The square root of 5217185217 is about 72230.0852623060. The cubic root of 5217185217 is about 1734.3846386076.

The spelling of 5217185217 in words is "five billion, two hundred seventeen million, one hundred eighty-five thousand, two hundred seventeen".