1001116550 has 72 divisors (see below), whose sum is σ = 2173622040. Its totient is φ = 342048000.

The previous prime is 1001116549. The next prime is 1001116579. The reversal of 1001116550 is 556111001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 981941 + ... + 982959.

It is an arithmetic number, because the mean of its divisors is an integer number (30189195).

Almost surely, 2^1001116550 is an apocalyptic number.

1001116550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001116550 is an abundant number, since it is smaller than the sum of its proper divisors (1172505490).

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

1001116550 is a wasteful number, since it uses less digits than its factorization.

1001116550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446 (or 1434 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1001116550 is about 31640.4258820895. The cubic root of 1001116550 is about 1000.3720448988.

Adding to 1001116550 its reverse (556111001), we get a palindrome (1557227551).

The spelling of 1001116550 in words is "one billion, one million, one hundred sixteen thousand, five hundred fifty".