522653861 has 2 divisors, whose sum is σ = 522653862. Its totient is φ = 522653860.

The previous prime is 522653839. The next prime is 522653867. The reversal of 522653861 is 168356225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263250625 + 259403236 = 16225^2 + 16106^2 .

It is a cyclic number.

It is not a de Polignac number, because 522653861 - 2¹⁸ = 522391717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (522653867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261326930 + 261326931.

It is an arithmetic number, because the mean of its divisors is an integer number (261326931).

Almost surely, 2^522653861 is an apocalyptic number.

It is an amenable number.

522653861 is a deficient number, since it is larger than the sum of its proper divisors (1).

522653861 is an equidigital number, since it uses as much as digits as its factorization.

522653861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 38.

The square root of 522653861 is about 22861.6241986435. The cubic root of 522653861 is about 805.5108371135.

The spelling of 522653861 in words is "five hundred twenty-two million, six hundred fifty-three thousand, eight hundred sixty-one".