1166515550 has 24 divisors (see below), whose sum is σ = 2206499400. Its totient is φ = 458696480.

The previous prime is 1166515543. The next prime is 1166515577. The reversal of 1166515550 is 555156611.

1166515550 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1166515550.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 194765 + ... + 200664.

It is an arithmetic number, because the mean of its divisors is an integer number (91937475).

Almost surely, 2^1166515550 is an apocalyptic number.

1166515550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1166515550 is a deficient number, since it is larger than the sum of its proper divisors (1039983850).

1166515550 is a wasteful number, since it uses less digits than its factorization.

1166515550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395500 (or 395495 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The square root of 1166515550 is about 34154.2903600704. The cubic root of 1166515550 is about 1052.6811449226.

The spelling of 1166515550 in words is "one billion, one hundred sixty-six million, five hundred fifteen thousand, five hundred fifty".