5239049561 has 4 divisors (see below), whose sum is σ = 5241419172. Its totient is φ = 5236679952.

The previous prime is 5239049551. The next prime is 5239049591. The reversal of 5239049561 is 1659409325.

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 4767073936 + 471975625 = 69044^2 + 21725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5239049561 is a prime.

It is a super-2 number, since 2×5239049561² = 54895280605228585442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5239049551) 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, 1181486 + ... + 1185911.

It is an arithmetic number, because the mean of its divisors is an integer number (1310354793).

Almost surely, 2^5239049561 is an apocalyptic number.

It is an amenable number.

5239049561 is a deficient number, since it is larger than the sum of its proper divisors (2369611).

5239049561 is a wasteful number, since it uses less digits than its factorization.

5239049561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369610.

The product of its (nonzero) digits is 291600, while the sum is 44.

The square root of 5239049561 is about 72381.2790782257. The cubic root of 5239049561 is about 1736.8040998063.

The spelling of 5239049561 in words is "five billion, two hundred thirty-nine million, forty-nine thousand, five hundred sixty-one".