5558009 has 2 divisors, whose sum is σ = 5558010. Its totient is φ = 5558008.

The previous prime is 5557999. The next prime is 5558023. The reversal of 5558009 is 9008555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3139984 + 2418025 = 1772^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 5558009 - 2⁸ = 5557753 is a prime.

It is a super-4 number, since 4×5558009⁴ (a number of 28 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5558209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2779004 + 2779005.

It is an arithmetic number, because the mean of its divisors is an integer number (2779005).

Almost surely, 2^5558009 is an apocalyptic number.

It is an amenable number.

5558009 is a deficient number, since it is larger than the sum of its proper divisors (1).

5558009 is an equidigital number, since it uses as much as digits as its factorization.

5558009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 5558009 is about 2357.5430006683. The cubic root of 5558009 is about 177.1358294311.

The spelling of 5558009 in words is "five million, five hundred fifty-eight thousand, nine".