571972217 has 2 divisors, whose sum is σ = 571972218. Its totient is φ = 571972216.

The previous prime is 571972207. The next prime is 571972243. The reversal of 571972217 is 712279175.

It is a happy number.

571972217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 396965776 + 175006441 = 19924^2 + 13229^2 .

It is a cyclic number.

It is not a de Polignac number, because 571972217 - 2⁴ = 571972201 is a prime.

It is not a weakly prime, because it can be changed into another prime (571972207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285986108 + 285986109.

It is an arithmetic number, because the mean of its divisors is an integer number (285986109).

Almost surely, 2^571972217 is an apocalyptic number.

It is an amenable number.

571972217 is a deficient number, since it is larger than the sum of its proper divisors (1).

571972217 is an equidigital number, since it uses as much as digits as its factorization.

571972217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61740, while the sum is 41.

The square root of 571972217 is about 23915.9406463555. The cubic root of 571972217 is about 830.0896100086.

The spelling of 571972217 in words is "five hundred seventy-one million, nine hundred seventy-two thousand, two hundred seventeen".