52117217 has 4 divisors (see below), whose sum is σ = 52266900. Its totient is φ = 51967536.

The previous prime is 52117213. The next prime is 52117253. The reversal of 52117217 is 71271125.

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 27920656 + 24196561 = 5284^2 + 4919^2 .

It is a cyclic number.

It is not a de Polignac number, because 52117217 - 2² = 52117213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52117213) 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, 74318 + ... + 75015.

It is an arithmetic number, because the mean of its divisors is an integer number (13066725).

Almost surely, 2^52117217 is an apocalyptic number.

It is an amenable number.

52117217 is a deficient number, since it is larger than the sum of its proper divisors (149683).

52117217 is a wasteful number, since it uses less digits than its factorization.

52117217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149682.

The product of its digits is 980, while the sum is 26.

The square root of 52117217 is about 7219.2255124771. The cubic root of 52117217 is about 373.5313627506.

The spelling of 52117217 in words is "fifty-two million, one hundred seventeen thousand, two hundred seventeen".