539247481 has 4 divisors (see below), whose sum is σ = 543183732. Its totient is φ = 535311232.

The previous prime is 539247473. The next prime is 539247487. The reversal of 539247481 is 184742935.

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 372837481 + 166410000 = 19309^2 + 12900^2 .

It is a cyclic number.

It is not a de Polignac number, because 539247481 - 2³ = 539247473 is a prime.

It is a super-2 number, since 2×539247481² = 581575691529690722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (539247487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1967920 + ... + 1968193.

It is an arithmetic number, because the mean of its divisors is an integer number (135795933).

Almost surely, 2^539247481 is an apocalyptic number.

It is an amenable number.

539247481 is a deficient number, since it is larger than the sum of its proper divisors (3936251).

539247481 is a wasteful number, since it uses less digits than its factorization.

539247481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936250.

The product of its digits is 241920, while the sum is 43.

The square root of 539247481 is about 23221.7028014743. The cubic root of 539247481 is about 813.9468404574.

The spelling of 539247481 in words is "five hundred thirty-nine million, two hundred forty-seven thousand, four hundred eighty-one".