522604661 has 2 divisors, whose sum is σ = 522604662. Its totient is φ = 522604660.

The previous prime is 522604639. The next prime is 522604681. The reversal of 522604661 is 166406225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 353214436 + 169390225 = 18794^2 + 13015^2 .

It is a cyclic number.

It is not a de Polignac number, because 522604661 - 2¹⁰ = 522603637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (522604601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261302330 + 261302331.

It is an arithmetic number, because the mean of its divisors is an integer number (261302331).

Almost surely, 2^522604661 is an apocalyptic number.

It is an amenable number.

522604661 is a deficient number, since it is larger than the sum of its proper divisors (1).

522604661 is an equidigital number, since it uses as much as digits as its factorization.

522604661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 522604661 is about 22860.5481342858. The cubic root of 522604661 is about 805.4855607437.

The spelling of 522604661 in words is "five hundred twenty-two million, six hundred four thousand, six hundred sixty-one".