53304143 has 4 divisors (see below), whose sum is σ = 53359680. Its totient is φ = 53248608.

The previous prime is 53304127. The next prime is 53304151. The reversal of 53304143 is 34140335.

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 53304143 - 2⁴ = 53304127 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 (53304193) 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, 26303 + ... + 28256.

It is an arithmetic number, because the mean of its divisors is an integer number (13339920).

Almost surely, 2^53304143 is an apocalyptic number.

53304143 is a deficient number, since it is larger than the sum of its proper divisors (55537).

53304143 is an equidigital number, since it uses as much as digits as its factorization.

53304143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55536.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 53304143 is about 7300.9686343663. The cubic root of 53304143 is about 376.3457261315.

Adding to 53304143 its reverse (34140335), we get a palindrome (87444478).

The spelling of 53304143 in words is "fifty-three million, three hundred four thousand, one hundred forty-three".