2065021571 has 8 divisors (see below), whose sum is σ = 2077883280. Its totient is φ = 2052184288.

The previous prime is 2065021561. The next prime is 2065021573. The reversal of 2065021571 is 1751205602.

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

It is a cyclic number.

It is not a de Polignac number, because 2065021571 - 2¹⁰ = 2065020547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2065021573) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 181025 + ... + 192093.

It is an arithmetic number, because the mean of its divisors is an integer number (259735410).

Almost surely, 2^2065021571 is an apocalyptic number.

2065021571 is a deficient number, since it is larger than the sum of its proper divisors (12861709).

2065021571 is a wasteful number, since it uses less digits than its factorization.

2065021571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12213.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 2065021571 is about 45442.5084144791. The cubic root of 2065021571 is about 1273.4293762171.

The spelling of 2065021571 in words is "two billion, sixty-five million, twenty-one thousand, five hundred seventy-one".