2165250301 has 4 divisors (see below), whose sum is σ = 2166180732. Its totient is φ = 2164319872.

The previous prime is 2165250289. The next prime is 2165250313. The reversal of 2165250301 is 1030525612.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2165250289) and next prime (2165250313).

It can be written as a sum of positive squares in 2 ways, for example, as 1481480100 + 683770201 = 38490^2 + 26149^2 .

It is a cyclic number.

It is not a de Polignac number, because 2165250301 - 2⁹ = 2165249789 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165250331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461716 + ... + 466381.

It is an arithmetic number, because the mean of its divisors is an integer number (541545183).

Almost surely, 2^2165250301 is an apocalyptic number.

It is an amenable number.

2165250301 is a deficient number, since it is larger than the sum of its proper divisors (930431).

2165250301 is an equidigital number, since it uses as much as digits as its factorization.

2165250301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930430.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2165250301 is about 46532.2501175260. The cubic root of 2165250301 is about 1293.7073212492.

Adding to 2165250301 its reverse (1030525612), we get a palindrome (3195775913).

The spelling of 2165250301 in words is "two billion, one hundred sixty-five million, two hundred fifty thousand, three hundred one".