539244521 has 2 divisors, whose sum is σ = 539244522. Its totient is φ = 539244520.

The previous prime is 539244493. The next prime is 539244533. The reversal of 539244521 is 125442935.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 435306496 + 103938025 = 20864^2 + 10195^2 .

It is a cyclic number.

It is not a de Polignac number, because 539244521 - 2⁶ = 539244457 is a prime.

It is not a weakly prime, because it can be changed into another prime (539244221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269622260 + 269622261.

It is an arithmetic number, because the mean of its divisors is an integer number (269622261).

Almost surely, 2^539244521 is an apocalyptic number.

It is an amenable number.

539244521 is a deficient number, since it is larger than the sum of its proper divisors (1).

539244521 is an equidigital number, since it uses as much as digits as its factorization.

539244521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 35.

The square root of 539244521 is about 23221.6390679039. The cubic root of 539244521 is about 813.9453511678.

The spelling of 539244521 in words is "five hundred thirty-nine million, two hundred forty-four thousand, five hundred twenty-one".