63544321 has 4 divisors (see below), whose sum is σ = 63747652. Its totient is φ = 63340992.

The previous prime is 63544291. The next prime is 63544333. The reversal of 63544321 is 12344536.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 960400 + 62583921 = 980^2 + 7911^2 .

It is a cyclic number.

It is not a de Polignac number, because 63544321 - 2¹⁷ = 63413249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63544321.

It is not an unprimeable number, because it can be changed into a prime (63544381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101196 + ... + 101821.

It is an arithmetic number, because the mean of its divisors is an integer number (15936913).

Almost surely, 2^63544321 is an apocalyptic number.

It is an amenable number.

63544321 is a deficient number, since it is larger than the sum of its proper divisors (203331).

63544321 is a wasteful number, since it uses less digits than its factorization.

63544321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203330.

The product of its digits is 8640, while the sum is 28.

The square root of 63544321 is about 7971.4691870445. The cubic root of 63544321 is about 399.0484067208.

Adding to 63544321 its reverse (12344536), we get a palindrome (75888857).

The spelling of 63544321 in words is "sixty-three million, five hundred forty-four thousand, three hundred twenty-one".