522131969 has 2 divisors, whose sum is σ = 522131970. Its totient is φ = 522131968.

The previous prime is 522131963. The next prime is 522132019. The reversal of 522131969 is 969131225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 488631025 + 33500944 = 22105^2 + 5788^2 .

It is a cyclic number.

It is not a de Polignac number, because 522131969 - 2⁸ = 522131713 is a prime.

It is a super-2 number, since 2×522131969² = 545243586103633922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (522131963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261065984 + 261065985.

It is an arithmetic number, because the mean of its divisors is an integer number (261065985).

Almost surely, 2^522131969 is an apocalyptic number.

It is an amenable number.

522131969 is a deficient number, since it is larger than the sum of its proper divisors (1).

522131969 is an equidigital number, since it uses as much as digits as its factorization.

522131969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 38.

The square root of 522131969 is about 22850.2071981853. The cubic root of 522131969 is about 805.2426356029.

The spelling of 522131969 in words is "five hundred twenty-two million, one hundred thirty-one thousand, nine hundred sixty-nine".