53203903 has 4 divisors (see below), whose sum is σ = 53674848. Its totient is φ = 52732960.

The previous prime is 53203889. The next prime is 53203939. The reversal of 53203903 is 30930235.

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 53203903 - 2²⁵ = 19649471 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 (53203973) 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, 235303 + ... + 235528.

It is an arithmetic number, because the mean of its divisors is an integer number (13418712).

Almost surely, 2^53203903 is an apocalyptic number.

53203903 is a deficient number, since it is larger than the sum of its proper divisors (470945).

53203903 is a wasteful number, since it uses less digits than its factorization.

53203903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470944.

The product of its (nonzero) digits is 2430, while the sum is 25.

The square root of 53203903 is about 7294.1005614126. The cubic root of 53203903 is about 376.1096683832.

The spelling of 53203903 in words is "fifty-three million, two hundred three thousand, nine hundred three".