531354550543 has 4 divisors (see below), whose sum is σ = 542659966560. Its totient is φ = 520049134528.

The previous prime is 531354550513. The next prime is 531354550547. The reversal of 531354550543 is 345055453135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345055453135 = 5 ⋅69011090627.

It is a cyclic number.

It is not a de Polignac number, because 531354550543 - 2¹⁷ = 531354419471 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 531354550543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531354550547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5652707938 + ... + 5652708031.

It is an arithmetic number, because the mean of its divisors is an integer number (135664991640).

Almost surely, 2^531354550543 is an apocalyptic number.

531354550543 is a deficient number, since it is larger than the sum of its proper divisors (11305416017).

531354550543 is a wasteful number, since it uses less digits than its factorization.

531354550543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11305416016.

The product of its (nonzero) digits is 1350000, while the sum is 43.

The spelling of 531354550543 in words is "five hundred thirty-one billion, three hundred fifty-four million, five hundred fifty thousand, five hundred forty-three".