53438843 has 4 divisors (see below), whose sum is σ = 53463960. Its totient is φ = 53413728.

The previous prime is 53438813. The next prime is 53438873. The reversal of 53438843 is 34883435.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (53438813) and next prime (53438873).

It is a cyclic number.

It is not a de Polignac number, because 53438843 - 2⁶ = 53438779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53438797 and 53438806.

It is not an unprimeable number, because it can be changed into a prime (53438813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9038 + ... + 13731.

It is an arithmetic number, because the mean of its divisors is an integer number (13365990).

Almost surely, 2^53438843 is an apocalyptic number.

53438843 is a deficient number, since it is larger than the sum of its proper divisors (25117).

53438843 is a wasteful number, since it uses less digits than its factorization.

53438843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25116.

The product of its digits is 138240, while the sum is 38.

The square root of 53438843 is about 7310.1876172914. The cubic root of 53438843 is about 376.6624690407.

The spelling of 53438843 in words is "fifty-three million, four hundred thirty-eight thousand, eight hundred forty-three".