71052217 has 8 divisors (see below), whose sum is σ = 73483520. Its totient is φ = 68629680.

The previous prime is 71052199. The next prime is 71052239. The reversal of 71052217 is 71225017.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71052217 - 2¹¹ = 71050169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71052191 and 71052200.

It is not an unprimeable number, because it can be changed into a prime (71052257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17134 + ... + 20872.

It is an arithmetic number, because the mean of its divisors is an integer number (9185440).

Almost surely, 2^71052217 is an apocalyptic number.

It is an amenable number.

71052217 is a deficient number, since it is larger than the sum of its proper divisors (2431303).

71052217 is a wasteful number, since it uses less digits than its factorization.

71052217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4383.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 71052217 is about 8429.2477125779. The cubic root of 71052217 is about 414.1832623110.

The spelling of 71052217 in words is "seventy-one million, fifty-two thousand, two hundred seventeen".