53944403 has 8 divisors (see below), whose sum is σ = 55749936. Its totient is φ = 52164000.

The previous prime is 53944399. The next prime is 53944441. The reversal of 53944403 is 30444935.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53944403 - 2² = 53944399 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 53944403.

It is not an unprimeable number, because it can be changed into a prime (53944463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1868 + ... + 10553.

It is an arithmetic number, because the mean of its divisors is an integer number (6968742).

Almost surely, 2^53944403 is an apocalyptic number.

53944403 is a deficient number, since it is larger than the sum of its proper divisors (1805533).

53944403 is a wasteful number, since it uses less digits than its factorization.

53944403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12565.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 53944403 is about 7344.6853574541. The cubic root of 53944403 is about 377.8465522200.

The spelling of 53944403 in words is "fifty-three million, nine hundred forty-four thousand, four hundred three".