5565439 has 4 divisors (see below), whose sum is σ = 6071400. Its totient is φ = 5059480.

The previous prime is 5565401. The next prime is 5565449. The reversal of 5565439 is 9345655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5565439 - 2⁷ = 5565311 is a prime.

It is a super-2 number, since 2×5565439² = 61948222525442, 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 = 5565398 and 5565407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5565449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252964 + ... + 252985.

It is an arithmetic number, because the mean of its divisors is an integer number (1517850).

Almost surely, 2^5565439 is an apocalyptic number.

5565439 is a deficient number, since it is larger than the sum of its proper divisors (505961).

5565439 is a wasteful number, since it uses less digits than its factorization.

5565439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505960.

The product of its digits is 81000, while the sum is 37.

The square root of 5565439 is about 2359.1182674889. The cubic root of 5565439 is about 177.2147265794.

It can be divided in two parts, 556 and 5439, that added together give a palindrome (5995).

The spelling of 5565439 in words is "five million, five hundred sixty-five thousand, four hundred thirty-nine".