53042400443 has 4 divisors (see below), whose sum is σ = 53529028080. Its totient is φ = 52555772808.

The previous prime is 53042400431. The next prime is 53042400461. The reversal of 53042400443 is 34400424035.

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 53042400443 - 2³⁴ = 35862531259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53042000443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243313655 + ... + 243313872.

It is an arithmetic number, because the mean of its divisors is an integer number (13382257020).

Almost surely, 2^53042400443 is an apocalyptic number.

53042400443 is a deficient number, since it is larger than the sum of its proper divisors (486627637).

53042400443 is a wasteful number, since it uses less digits than its factorization.

53042400443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486627636.

The product of its (nonzero) digits is 23040, while the sum is 29.

Adding to 53042400443 its reverse (34400424035), we get a palindrome (87442824478).

The spelling of 53042400443 in words is "fifty-three billion, forty-two million, four hundred thousand, four hundred forty-three".