5565439249 has 16 divisors (see below), whose sum is σ = 5817105360. Its totient is φ = 5319336960.

The previous prime is 5565439199. The next prime is 5565439267. The reversal of 5565439249 is 9429345655.

It can be written as a sum of positive squares in 8 ways, for example, as 493150849 + 5072288400 = 22207^2 + 71220^2 .

It is a cyclic number.

It is not a de Polignac number, because 5565439249 - 2⁹ = 5565438737 is a prime.

It is a super-2 number, since 2×5565439249² = 61948228068619368002, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5565439196 and 5565439205.

It is not an unprimeable number, because it can be changed into a prime (5565439949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2908317 + ... + 2910229.

It is an arithmetic number, because the mean of its divisors is an integer number (363569085).

Almost surely, 2^5565439249 is an apocalyptic number.

It is an amenable number.

5565439249 is a deficient number, since it is larger than the sum of its proper divisors (251666111).

5565439249 is a wasteful number, since it uses less digits than its factorization.

5565439249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300.

The product of its digits is 5832000, while the sum is 52.

The square root of 5565439249 is about 74601.8716186129. The cubic root of 5565439249 is about 1772.1472922225.

The spelling of 5565439249 in words is "five billion, five hundred sixty-five million, four hundred thirty-nine thousand, two hundred forty-nine".