53643903 has 4 divisors (see below), whose sum is σ = 71525208. Its totient is φ = 35762600.

The previous prime is 53643899. The next prime is 53643913. The reversal of 53643903 is 30934635.

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 53643903 - 2² = 53643899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53643913) 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, 8940648 + ... + 8940653.

It is an arithmetic number, because the mean of its divisors is an integer number (17881302).

Almost surely, 2^53643903 is an apocalyptic number.

53643903 is a deficient number, since it is larger than the sum of its proper divisors (17881305).

53643903 is a wasteful number, since it uses less digits than its factorization.

53643903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17881304.

The product of its (nonzero) digits is 29160, while the sum is 33.

The square root of 53643903 is about 7324.1998197755. The cubic root of 53643903 is about 377.1436410149.

The spelling of 53643903 in words is "fifty-three million, six hundred forty-three thousand, nine hundred three".