5705520521 has 2 divisors, whose sum is σ = 5705520522. Its totient is φ = 5705520520.

The previous prime is 5705520511. The next prime is 5705520529. The reversal of 5705520521 is 1250255075.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5604618496 + 100902025 = 74864^2 + 10045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5705520521 is a prime.

It is a super-2 number, since 2×5705520521² = 65105928831104222882, 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 (5705520529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2852760260 + 2852760261.

It is an arithmetic number, because the mean of its divisors is an integer number (2852760261).

Almost surely, 2^5705520521 is an apocalyptic number.

It is an amenable number.

5705520521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5705520521 is an equidigital number, since it uses as much as digits as its factorization.

5705520521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 5705520521 is about 75534.8960481181. The cubic root of 5705520521 is about 1786.8924913927.

Adding to 5705520521 its reverse (1250255075), we get a palindrome (6955775596).

The spelling of 5705520521 in words is "five billion, seven hundred five million, five hundred twenty thousand, five hundred twenty-one".