2165373 has 48 divisors (see below), whose sum is σ = 3960320. Its totient is φ = 1154736.

The previous prime is 2165357. The next prime is 2165393. The reversal of 2165373 is 3735612.

It is a happy number.

2165373 is a `hidden beast` number, since 2 + 1 + 653 + 7 + 3 = 666.

It is not a de Polignac number, because 2165373 - 2⁴ = 2165357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (3780) is a multiple of the sum of its prime factors (108).

2165373 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165323) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32286 + ... + 32352.

2^2165373 is an apocalyptic number.

It is an amenable number.

2165373 is a deficient number, since it is larger than the sum of its proper divisors (1794947).

2165373 is an equidigital number, since it uses as much as digits as its factorization.

2165373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 96 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 2165373 is about 1471.5206420571. The cubic root of 2165373 is about 129.3731757777.

The spelling of 2165373 in words is "two million, one hundred sixty-five thousand, three hundred seventy-three".