63509401 has 2 divisors, whose sum is σ = 63509402. Its totient is φ = 63509400.

The previous prime is 63509393. The next prime is 63509431. The reversal of 63509401 is 10490536.

63509401 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 can be written as a sum of positive squares in only one way, i.e., 52186176 + 11323225 = 7224^2 + 3365^2 .

It is a cyclic number.

It is not a de Polignac number, because 63509401 - 2³ = 63509393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63509401.

It is not a weakly prime, because it can be changed into another prime (63509431) 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, 31754700 + 31754701.

It is an arithmetic number, because the mean of its divisors is an integer number (31754701).

Almost surely, 2^63509401 is an apocalyptic number.

It is an amenable number.

63509401 is a deficient number, since it is larger than the sum of its proper divisors (1).

63509401 is an equidigital number, since it uses as much as digits as its factorization.

63509401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 63509401 is about 7969.2785746264. The cubic root of 63509401 is about 398.9752959456.

Adding to 63509401 its reverse (10490536), we get a palindrome (73999937).

It can be divided in two parts, 6350 and 9401, that added together give a palindrome (15751).

The spelling of 63509401 in words is "sixty-three million, five hundred nine thousand, four hundred one".