63521011 has 2 divisors, whose sum is σ = 63521012. Its totient is φ = 63521010.

The previous prime is 63520997. The next prime is 63521033. The reversal of 63521011 is 11012536.

63521011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63521011 is a prime.

It is a super-3 number, since 3×63521011³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 63521011.

It is not a weakly prime, because it can be changed into another prime (63521071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31760505 + 31760506.

It is an arithmetic number, because the mean of its divisors is an integer number (31760506).

Almost surely, 2^63521011 is an apocalyptic number.

63521011 is a deficient number, since it is larger than the sum of its proper divisors (1).

63521011 is an equidigital number, since it uses as much as digits as its factorization.

63521011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 63521011 is about 7970.0069636105. The cubic root of 63521011 is about 398.9996063672. Note that the first 3 decimals are identical.

Adding to 63521011 its reverse (11012536), we get a palindrome (74533547).

The spelling of 63521011 in words is "sixty-three million, five hundred twenty-one thousand, eleven".