2165361 has 8 divisors (see below), whose sum is σ = 3149664. Its totient is φ = 1312320.

The previous prime is 2165357. The next prime is 2165393. The reversal of 2165361 is 1635612.

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

It is not a de Polignac number, because 2165361 - 2² = 2165357 is a prime.

2165361 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2165321) 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, 32776 + ... + 32841.

It is an arithmetic number, because the mean of its divisors is an integer number (393708).

2^2165361 is an apocalyptic number.

It is an amenable number.

2165361 is a deficient number, since it is larger than the sum of its proper divisors (984303).

2165361 is a wasteful number, since it uses less digits than its factorization.

2165361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65631.

The product of its digits is 1080, while the sum is 24.

The square root of 2165361 is about 1471.5165646366. The cubic root of 2165361 is about 129.3729367918.

The spelling of 2165361 in words is "two million, one hundred sixty-five thousand, three hundred sixty-one".