53443603 has 4 divisors (see below), whose sum is σ = 53523688. Its totient is φ = 53363520.

The previous prime is 53443601. The next prime is 53443609. The reversal of 53443603 is 30634435.

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 53443603 - 2¹ = 53443601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53443601) 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, 39033 + ... + 40378.

It is an arithmetic number, because the mean of its divisors is an integer number (13380922).

Almost surely, 2^53443603 is an apocalyptic number.

53443603 is a deficient number, since it is larger than the sum of its proper divisors (80085).

53443603 is an equidigital number, since it uses as much as digits as its factorization.

53443603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80084.

The product of its (nonzero) digits is 12960, while the sum is 28.

The square root of 53443603 is about 7310.5131830809. The cubic root of 53443603 is about 376.6736522925.

The spelling of 53443603 in words is "fifty-three million, four hundred forty-three thousand, six hundred three".