2001055065 has 8 divisors (see below), whose sum is σ = 3201688128. Its totient is φ = 1067229360.

The previous prime is 2001055037. The next prime is 2001055097. The reversal of 2001055065 is 5605501002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2001055065 - 2²¹ = 1998957913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66701821 + ... + 66701850.

It is an arithmetic number, because the mean of its divisors is an integer number (400211016).

Almost surely, 2^2001055065 is an apocalyptic number.

It is an amenable number.

2001055065 is a deficient number, since it is larger than the sum of its proper divisors (1200633063).

2001055065 is a wasteful number, since it uses less digits than its factorization.

2001055065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133403679.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 2001055065 is about 44733.1539800180. The cubic root of 2001055065 is about 1260.1425607151.

Adding to 2001055065 its reverse (5605501002), we get a palindrome (7606556067).

The spelling of 2001055065 in words is "two billion, one million, fifty-five thousand, sixty-five".