1001000550505 has 4 divisors (see below), whose sum is σ = 1201200660612. Its totient is φ = 800800440400.

The previous prime is 1001000550503. The next prime is 1001000550547. The reversal of 1001000550505 is 5050550001001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 450906878016 + 550093672489 = 671496^2 + 741683^2 .

It is not a de Polignac number, because 1001000550505 - 2¹ = 1001000550503 is a prime.

It is a super-2 number, since 2×1001000550505² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001000550503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100100055046 + ... + 100100055055.

It is an arithmetic number, because the mean of its divisors is an integer number (300300165153).

Almost surely, 2^{1001000550505} is an apocalyptic number.

It is an amenable number.

1001000550505 is a deficient number, since it is larger than the sum of its proper divisors (200200110107).

1001000550505 is an equidigital number, since it uses as much as digits as its factorization.

1001000550505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200200110106.

The product of its (nonzero) digits is 625, while the sum is 22.

Adding to 1001000550505 its reverse (5050550001001), we get a palindrome (6051550551506).

The spelling of 1001000550505 in words is "one trillion, one billion, five hundred fifty thousand, five hundred five".