63531361 has 2 divisors, whose sum is σ = 63531362. Its totient is φ = 63531360.

The previous prime is 63531353. The next prime is 63531367. The reversal of 63531361 is 16313536.

63531361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33281361 + 30250000 = 5769^2 + 5500^2 .

It is a cyclic number.

It is not a de Polignac number, because 63531361 - 2³ = 63531353 is a prime.

It is not a weakly prime, because it can be changed into another prime (63531367) 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, 31765680 + 31765681.

It is an arithmetic number, because the mean of its divisors is an integer number (31765681).

Almost surely, 2^63531361 is an apocalyptic number.

It is an amenable number.

63531361 is a deficient number, since it is larger than the sum of its proper divisors (1).

63531361 is an equidigital number, since it uses as much as digits as its factorization.

63531361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 28.

The square root of 63531361 is about 7970.6562465082. The cubic root of 63531361 is about 399.0212759513.

Adding to 63531361 its reverse (16313536), we get a palindrome (79844897).

The spelling of 63531361 in words is "sixty-three million, five hundred thirty-one thousand, three hundred sixty-one".