5556559 has 2 divisors, whose sum is σ = 5556560. Its totient is φ = 5556558.

The previous prime is 5556557. The next prime is 5556619. The reversal of 5556559 is 9556555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5556559 - 2¹ = 5556557 is a prime.

Together with 5556557, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5556557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778279 + 2778280.

It is an arithmetic number, because the mean of its divisors is an integer number (2778280).

Almost surely, 2^5556559 is an apocalyptic number.

5556559 is a deficient number, since it is larger than the sum of its proper divisors (1).

5556559 is an equidigital number, since it uses as much as digits as its factorization.

5556559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168750, while the sum is 40.

The square root of 5556559 is about 2357.2354570556. The cubic root of 5556559 is about 177.1204240769.

The spelling of 5556559 in words is "five million, five hundred fifty-six thousand, five hundred fifty-nine".