556000999 has 2 divisors, whose sum is σ = 556001000. Its totient is φ = 556000998.

The previous prime is 556000979. The next prime is 556001003. The reversal of 556000999 is 999000655.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556000999 - 2¹¹ = 555998951 is a prime.

It is a super-2 number, since 2×556000999² = 618274221777996002, which contains 22 as substring.

556000999 is a modest number, since divided by 999 gives 556 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556000979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278000499 + 278000500.

It is an arithmetic number, because the mean of its divisors is an integer number (278000500).

Almost surely, 2^556000999 is an apocalyptic number.

556000999 is a deficient number, since it is larger than the sum of its proper divisors (1).

556000999 is an equidigital number, since it uses as much as digits as its factorization.

556000999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109350, while the sum is 43.

The square root of 556000999 is about 23579.6734286122. The cubic root of 556000999 is about 822.2903443484.

The spelling of 556000999 in words is "five hundred fifty-six million, nine hundred ninety-nine", and thus it is an aban number.