539216641 has 2 divisors, whose sum is σ = 539216642. Its totient is φ = 539216640.

The previous prime is 539216611. The next prime is 539216701. The reversal of 539216641 is 146612935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528816016 + 10400625 = 22996^2 + 3225^2 .

It is a cyclic number.

It is not a de Polignac number, because 539216641 - 2¹⁹ = 538692353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 539216641.

It is not a weakly prime, because it can be changed into another prime (539216611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269608320 + 269608321.

It is an arithmetic number, because the mean of its divisors is an integer number (269608321).

Almost surely, 2^539216641 is an apocalyptic number.

It is an amenable number.

539216641 is a deficient number, since it is larger than the sum of its proper divisors (1).

539216641 is an equidigital number, since it uses as much as digits as its factorization.

539216641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 539216641 is about 23221.0387579884. The cubic root of 539216641 is about 813.9313234020.

The spelling of 539216641 in words is "five hundred thirty-nine million, two hundred sixteen thousand, six hundred forty-one".