2165356001 has 8 divisors (see below), whose sum is σ = 2219577864. Its totient is φ = 2111201280.

The previous prime is 2165355967. The next prime is 2165356007. The reversal of 2165356001 is 1006535612.

It can be written as a sum of positive squares in 4 ways, for example, as 36917776 + 2128438225 = 6076^2 + 46135^2 .

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 2165356001 - 2⁶ = 2165355937 is a prime.

It is a super-2 number, since 2×2165356001² = 9377533222133424002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2165356007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52001 + ... + 83873.

It is an arithmetic number, because the mean of its divisors is an integer number (277447233).

Almost surely, 2^2165356001 is an apocalyptic number.

It is an amenable number.

2165356001 is a deficient number, since it is larger than the sum of its proper divisors (54221863).

2165356001 is a wasteful number, since it uses less digits than its factorization.

2165356001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33571.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 2165356001 is about 46533.3858750897. The cubic root of 2165356001 is about 1293.7283723395.

The spelling of 2165356001 in words is "two billion, one hundred sixty-five million, three hundred fifty-six thousand, one".