63520529 has 2 divisors, whose sum is σ = 63520530. Its totient is φ = 63520528.

The previous prime is 63520493. The next prime is 63520531. The reversal of 63520529 is 92502536.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63234304 + 286225 = 7952^2 + 535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63520529 is a prime.

Together with 63520531, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 63520495 and 63520504.

It is not a weakly prime, because it can be changed into another prime (63520559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31760264 + 31760265.

It is an arithmetic number, because the mean of its divisors is an integer number (31760265).

Almost surely, 2^63520529 is an apocalyptic number.

It is an amenable number.

63520529 is a deficient number, since it is larger than the sum of its proper divisors (1).

63520529 is an equidigital number, since it uses as much as digits as its factorization.

63520529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 63520529 is about 7969.9767251856. The cubic root of 63520529 is about 398.9985971563.

The spelling of 63520529 in words is "sixty-three million, five hundred twenty thousand, five hundred twenty-nine".