5565999 has 8 divisors (see below), whose sum is σ = 7677360. Its totient is φ = 3582656.

The previous prime is 5565997. The next prime is 5566003. The reversal of 5565999 is 9995655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5565999 - 2¹ = 5565997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5565991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31902 + ... + 32075.

It is an arithmetic number, because the mean of its divisors is an integer number (959670).

Almost surely, 2^5565999 is an apocalyptic number.

5565999 is a deficient number, since it is larger than the sum of its proper divisors (2111361).

5565999 is a wasteful number, since it uses less digits than its factorization.

5565999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64009.

The product of its digits is 546750, while the sum is 48.

The square root of 5565999 is about 2359.2369529151. The cubic root of 5565999 is about 177.2206702206.

It can be divided in two parts, 556 and 5999, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 5565999 in words is "five million, five hundred sixty-five thousand, nine hundred ninety-nine".