53938243 has 4 divisors (see below), whose sum is σ = 56283408. Its totient is φ = 51593080.

The previous prime is 53938223. The next prime is 53938253. The reversal of 53938243 is 34283935.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53938243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53938223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1172548 + ... + 1172593.

It is an arithmetic number, because the mean of its divisors is an integer number (14070852).

Almost surely, 2^53938243 is an apocalyptic number.

53938243 is a deficient number, since it is larger than the sum of its proper divisors (2345165).

53938243 is a wasteful number, since it uses less digits than its factorization.

53938243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345164.

The product of its digits is 77760, while the sum is 37.

The square root of 53938243 is about 7344.2659946383. The cubic root of 53938243 is about 377.8321693663.

The spelling of 53938243 in words is "fifty-three million, nine hundred thirty-eight thousand, two hundred forty-three".