1665000055 has 16 divisors (see below), whose sum is σ = 2096020800. Its totient is φ = 1267947520.

The previous prime is 1665000041. The next prime is 1665000083. The reversal of 1665000055 is 5500005661.

It is not a de Polignac number, because 1665000055 - 2⁹ = 1664999543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1664999987 and 1665000032.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70570 + ... + 91159.

It is an arithmetic number, because the mean of its divisors is an integer number (131001300).

Almost surely, 2^1665000055 is an apocalyptic number.

1665000055 is a deficient number, since it is larger than the sum of its proper divisors (431020745).

1665000055 is a wasteful number, since it uses less digits than its factorization.

1665000055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161834.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 1665000055 is about 40804.4122001531. The cubic root of 1665000055 is about 1185.2357723701.

The spelling of 1665000055 in words is "one billion, six hundred sixty-five million, fifty-five", and thus it is an aban number.