43255203503 has 4 divisors (see below), whose sum is σ = 43257760920. Its totient is φ = 43252646088.

The previous prime is 43255203493. The next prime is 43255203583. The reversal of 43255203503 is 30530255234.

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 43255203503 - 2²⁶ = 43188094639 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 43255203503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43255203583) 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, 1253168 + ... + 1287221.

It is an arithmetic number, because the mean of its divisors is an integer number (10814440230).

Almost surely, 2^43255203503 is an apocalyptic number.

43255203503 is a deficient number, since it is larger than the sum of its proper divisors (2557417).

43255203503 is a wasteful number, since it uses less digits than its factorization.

43255203503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557416.

The product of its (nonzero) digits is 54000, while the sum is 32.

Adding to 43255203503 its reverse (30530255234), we get a palindrome (73785458737).

The spelling of 43255203503 in words is "forty-three billion, two hundred fifty-five million, two hundred three thousand, five hundred three".