5665559 has 2 divisors, whose sum is σ = 5665560. Its totient is φ = 5665558.

The previous prime is 5665549. The next prime is 5665571. The reversal of 5665559 is 9555665.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5665559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5665519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2832779 + 2832780.

It is an arithmetic number, because the mean of its divisors is an integer number (2832780).

Almost surely, 2^5665559 is an apocalyptic number.

5665559 is a deficient number, since it is larger than the sum of its proper divisors (1).

5665559 is an equidigital number, since it uses as much as digits as its factorization.

5665559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 202500, while the sum is 41.

The square root of 5665559 is about 2380.2434749412. The cubic root of 5665559 is about 178.2710909424.

The spelling of 5665559 in words is "five million, six hundred sixty-five thousand, five hundred fifty-nine".