1001105550 has 36 divisors (see below), whose sum is σ = 2689638120. Its totient is φ = 266961360.

The previous prime is 1001105543. The next prime is 1001105551. The reversal of 1001105550 is 555011001.

1001105550 is a `hidden beast` number, since 1 + 0 + 0 + 110 + 5 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001105551) 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 17 ways as a sum of consecutive naturals, for example, 1111890 + ... + 1112789.

It is an arithmetic number, because the mean of its divisors is an integer number (74712170).

Almost surely, 2^1001105550 is an apocalyptic number.

1001105550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001105550 is an abundant number, since it is smaller than the sum of its proper divisors (1688532570).

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

1001105550 is a wasteful number, since it uses less digits than its factorization.

1001105550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224697 (or 2224689 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 1001105550 is about 31640.2520533576. The cubic root of 1001105550 is about 1000.3683809455.

Adding to 1001105550 its reverse (555011001), we get a palindrome (1556116551).

The spelling of 1001105550 in words is "one billion, one million, one hundred five thousand, five hundred fifty".