1002000555 has 24 divisors (see below), whose sum is σ = 1760598528. Its totient is φ = 527078016.

The previous prime is 1002000551. The next prime is 1002000619. The reversal of 1002000555 is 5550002001.

It is not a de Polignac number, because 1002000555 - 2² = 1002000551 is a prime.

It is a super-2 number, since 2×1002000555² = 2008010224440616050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1002000551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149227 + ... + 155796.

It is an arithmetic number, because the mean of its divisors is an integer number (73358272).

Almost surely, 2^1002000555 is an apocalyptic number.

1002000555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1002000555 is a deficient number, since it is larger than the sum of its proper divisors (758597973).

1002000555 is a wasteful number, since it uses less digits than its factorization.

1002000555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305107 (or 305104 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 1002000555 is about 31654.3923492459. The cubic root of 1002000555 is about 1000.6664074691. Note that the first 3 decimals are identical.

Adding to 1002000555 its reverse (5550002001), we get a palindrome (6552002556).

The spelling of 1002000555 in words is "one billion, two million, five hundred fifty-five", and thus it is an aban number.