556001000 has 128 divisors (see below), whose sum is σ = 1358622720. Its totient is φ = 212800000.

The previous prime is 556000999. The next prime is 556001003. The reversal of 556001000 is 100655.

It is a super-2 number, since 2×556001000² = 618274224002000000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 556001000.

It is not an unprimeable number, because it can be changed into a prime (556001003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2910905 + ... + 2911095.

It is an arithmetic number, because the mean of its divisors is an integer number (10614240).

Almost surely, 2^556001000 is an apocalyptic number.

556001000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556001000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679311360).

556001000 is an abundant number, since it is smaller than the sum of its proper divisors (802621720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556001000 is a wasteful number, since it uses less digits than its factorization.

556001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 556001000 is about 23579.6734498169. The cubic root of 556001000 is about 822.2903448414.

Adding to 556001000 its reverse (100655), we get a palindrome (556101655).

The spelling of 556001000 in words is "five hundred fifty-six million, one thousand".