539243273 has 4 divisors (see below), whose sum is σ = 544802580. Its totient is φ = 533683968.

The previous prime is 539243239. The next prime is 539243279. The reversal of 539243273 is 372342935.

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

It can be written as a sum of positive squares in 2 ways, for example, as 194658304 + 344584969 = 13952^2 + 18563^2 .

It is a cyclic number.

It is not a de Polignac number, because 539243273 - 2⁶ = 539243209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (539243279) 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, 2779508 + ... + 2779701.

It is an arithmetic number, because the mean of its divisors is an integer number (136200645).

Almost surely, 2^539243273 is an apocalyptic number.

It is an amenable number.

539243273 is a deficient number, since it is larger than the sum of its proper divisors (5559307).

539243273 is an equidigital number, since it uses as much as digits as its factorization.

539243273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5559306.

The product of its digits is 136080, while the sum is 38.

The square root of 539243273 is about 23221.6121964001. The cubic root of 539243273 is about 813.9447232495.

The spelling of 539243273 in words is "five hundred thirty-nine million, two hundred forty-three thousand, two hundred seventy-three".