2640253 has 16 divisors (see below), whose sum is σ = 3487104. Its totient is φ = 1935360.

The previous prime is 2640251. The next prime is 2640271. The reversal of 2640253 is 3520462.

It is a happy number.

2640253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2640253 - 2¹ = 2640251 is a prime.

It is a Duffinian number.

2640253 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301 + ... + 2317.

It is an arithmetic number, because the mean of its divisors is an integer number (217944).

2^2640253 is an apocalyptic number.

It is an amenable number.

2640253 is a deficient number, since it is larger than the sum of its proper divisors (846851).

2640253 is a wasteful number, since it uses less digits than its factorization.

2640253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 2640253 is about 1624.8855344300. The cubic root of 2640253 is about 138.2128794518.

The spelling of 2640253 in words is "two million, six hundred forty thousand, two hundred fifty-three".