53303543 has 4 divisors (see below), whose sum is σ = 53571600. Its totient is φ = 53035488.

The previous prime is 53303501. The next prime is 53303557. The reversal of 53303543 is 34530335.

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

It is a cyclic number.

It is not a de Polignac number, because 53303543 - 2⁸ = 53303287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53303843) 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, 133730 + ... + 134127.

It is an arithmetic number, because the mean of its divisors is an integer number (13392900).

Almost surely, 2^53303543 is an apocalyptic number.

53303543 is a deficient number, since it is larger than the sum of its proper divisors (268057).

53303543 is a wasteful number, since it uses less digits than its factorization.

53303543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268056.

The product of its (nonzero) digits is 8100, while the sum is 26.

The square root of 53303543 is about 7300.9275438125. The cubic root of 53303543 is about 376.3443140569.

Adding to 53303543 its reverse (34530335), we get a palindrome (87833878).

The spelling of 53303543 in words is "fifty-three million, three hundred three thousand, five hundred forty-three".