63503243 has 4 divisors (see below), whose sum is σ = 65693040. Its totient is φ = 61313448.

The previous prime is 63503233. The next prime is 63503249. The reversal of 63503243 is 34230536.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63503243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63503249) 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, 1094855 + ... + 1094912.

It is an arithmetic number, because the mean of its divisors is an integer number (16423260).

Almost surely, 2^63503243 is an apocalyptic number.

63503243 is a deficient number, since it is larger than the sum of its proper divisors (2189797).

63503243 is a wasteful number, since it uses less digits than its factorization.

63503243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189796.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 63503243 is about 7968.8922065743. The cubic root of 63503243 is about 398.9624003782.

Adding to 63503243 its reverse (34230536), we get a palindrome (97733779).

The spelling of 63503243 in words is "sixty-three million, five hundred three thousand, two hundred forty-three".