522572861 has 2 divisors, whose sum is σ = 522572862. Its totient is φ = 522572860.

The previous prime is 522572819. The next prime is 522572873. The reversal of 522572861 is 168275225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423948100 + 98624761 = 20590^2 + 9931^2 .

It is a cyclic number.

It is not a de Polignac number, because 522572861 - 2¹⁰ = 522571837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (522572891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261286430 + 261286431.

It is an arithmetic number, because the mean of its divisors is an integer number (261286431).

Almost surely, 2^522572861 is an apocalyptic number.

It is an amenable number.

522572861 is a deficient number, since it is larger than the sum of its proper divisors (1).

522572861 is an equidigital number, since it uses as much as digits as its factorization.

522572861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 38.

The square root of 522572861 is about 22859.8526023245. The cubic root of 522572861 is about 805.4692227338.

The spelling of 522572861 in words is "five hundred twenty-two million, five hundred seventy-two thousand, eight hundred sixty-one".