2133765 has 12 divisors (see below), whose sum is σ = 3698604. Its totient is φ = 1137984.

The previous prime is 2133743. The next prime is 2133773. The reversal of 2133765 is 5673312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 492804 + 1640961 = 702^2 + 1281^2 .

It is not a de Polignac number, because 2133765 - 2⁶ = 2133701 is a prime.

It is a d-powerful number, because it can be written as 2 + 1 + 3⁷ + 3¹¹ + 7 + 6⁴ + 5⁹ .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23664 + ... + 23753.

It is an arithmetic number, because the mean of its divisors is an integer number (308217).

2^2133765 is an apocalyptic number.

It is an amenable number.

2133765 is a deficient number, since it is larger than the sum of its proper divisors (1564839).

2133765 is a wasteful number, since it uses less digits than its factorization.

2133765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47428 (or 47425 counting only the distinct ones).

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

The square root of 2133765 is about 1460.7412501877. The cubic root of 2133765 is about 128.7406000615.

The spelling of 2133765 in words is "two million, one hundred thirty-three thousand, seven hundred sixty-five".