1665055101 has 24 divisors (see below), whose sum is σ = 2347630560. Its totient is φ = 1049567904.

The previous prime is 1665055087. The next prime is 1665055109. The reversal of 1665055101 is 1015505661.

It is not a de Polignac number, because 1665055101 - 2⁶ = 1665055037 is a prime.

It is a super-2 number, since 2×1665055101² = 5544816978732240402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665055109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 712531 + ... + 714863.

It is an arithmetic number, because the mean of its divisors is an integer number (97817940).

Almost surely, 2^1665055101 is an apocalyptic number.

It is an amenable number.

1665055101 is a deficient number, since it is larger than the sum of its proper divisors (682575459).

1665055101 is a wasteful number, since it uses less digits than its factorization.

1665055101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033 (or 3014 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 1665055101 is about 40805.0867049685. The cubic root of 1665055101 is about 1185.2488337850.

The spelling of 1665055101 in words is "one billion, six hundred sixty-five million, fifty-five thousand, one hundred one".