1001000055 has 32 divisors (see below), whose sum is σ = 1752307200. Its totient is φ = 483914880.

The previous prime is 1001000051. The next prime is 1001000107. The reversal of 1001000055 is 5500001001.

It is not a de Polignac number, because 1001000055 - 2² = 1001000051 is a prime.

It is a super-2 number, since 2×1001000055² = 2004002220220006050, 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 1001000055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001000051) 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 31 ways as a sum of consecutive naturals, for example, 48894 + ... + 66276.

It is an arithmetic number, because the mean of its divisors is an integer number (54759600).

Almost surely, 2^1001000055 is an apocalyptic number.

1001000055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1001000055 is a deficient number, since it is larger than the sum of its proper divisors (751307145).

1001000055 is a wasteful number, since it uses less digits than its factorization.

1001000055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17751.

The product of its (nonzero) digits is 25, while the sum is 12.

The square root of 1001000055 is about 31638.5849083046. The cubic root of 1001000055 is about 1000.3332406050. Note that the first 3 decimals are identical.

Adding to 1001000055 its reverse (5500001001), we get a palindrome (6501001056).

The spelling of 1001000055 in words is "one billion, one million, fifty-five", and thus it is an aban number and an uban number.