53031443 has 4 divisors (see below), whose sum is σ = 53518080. Its totient is φ = 52544808.

The previous prime is 53031431. The next prime is 53031457. The reversal of 53031443 is 34413035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34413035 = 5 ⋅6882607.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53031443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53031403) 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, 243155 + ... + 243372.

It is an arithmetic number, because the mean of its divisors is an integer number (13379520).

Almost surely, 2^53031443 is an apocalyptic number.

53031443 is a deficient number, since it is larger than the sum of its proper divisors (486637).

53031443 is a wasteful number, since it uses less digits than its factorization.

53031443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486636.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 53031443 is about 7282.2690831910. The cubic root of 53031443 is about 375.7028430599.

Adding to 53031443 its reverse (34413035), we get a palindrome (87444478).

The spelling of 53031443 in words is "fifty-three million, thirty-one thousand, four hundred forty-three".