63543243 has 4 divisors (see below), whose sum is σ = 84724328. Its totient is φ = 42362160.

The previous prime is 63543199. The next prime is 63543251. The reversal of 63543243 is 34234536.

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

It is not a de Polignac number, because 63543243 - 2¹³ = 63535051 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 63543243.

It is not an unprimeable number, because it can be changed into a prime (63543143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10590538 + ... + 10590543.

It is an arithmetic number, because the mean of its divisors is an integer number (21181082).

Almost surely, 2^63543243 is an apocalyptic number.

63543243 is a deficient number, since it is larger than the sum of its proper divisors (21181085).

63543243 is a wasteful number, since it uses less digits than its factorization.

63543243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21181084.

The product of its digits is 25920, while the sum is 30.

The square root of 63543243 is about 7971.4015706148. The cubic root of 63543243 is about 399.0461501508.

Adding to 63543243 its reverse (34234536), we get a palindrome (97777779).

The spelling of 63543243 in words is "sixty-three million, five hundred forty-three thousand, two hundred forty-three".