63443161 has 4 divisors (see below), whose sum is σ = 63511524. Its totient is φ = 63374800.

The previous prime is 63443137. The next prime is 63443179. The reversal of 63443161 is 16134436.

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 39000025 + 24443136 = 6245^2 + 4944^2 .

It is a cyclic number.

It is not a de Polignac number, because 63443161 - 2⁹ = 63442649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63443461) 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, 32770 + ... + 34651.

It is an arithmetic number, because the mean of its divisors is an integer number (15877881).

Almost surely, 2^63443161 is an apocalyptic number.

It is an amenable number.

63443161 is a deficient number, since it is larger than the sum of its proper divisors (68363).

63443161 is an equidigital number, since it uses as much as digits as its factorization.

63443161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68362.

The product of its digits is 5184, while the sum is 28.

The square root of 63443161 is about 7965.1215307740. The cubic root of 63443161 is about 398.8365379210.

Adding to 63443161 its reverse (16134436), we get a palindrome (79577597).

The spelling of 63443161 in words is "sixty-three million, four hundred forty-three thousand, one hundred sixty-one".