2540353 has 4 divisors (see below), whose sum is σ = 2562948. Its totient is φ = 2517760.

The previous prime is 2540341. The next prime is 2540389. The reversal of 2540353 is 3530452.

2540353 = T₂₂ + T₂₃ + ... + T₂₄₇.

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

It can be written as a sum of positive squares in 2 ways, for example, as 69169 + 2471184 = 263^2 + 1572^2 .

It is a cyclic number.

It is not a de Polignac number, because 2540353 - 2⁹ = 2539841 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2540323) 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, 11128 + ... + 11353.

It is an arithmetic number, because the mean of its divisors is an integer number (640737).

2^2540353 is an apocalyptic number.

It is an amenable number.

2540353 is a deficient number, since it is larger than the sum of its proper divisors (22595).

2540353 is a wasteful number, since it uses less digits than its factorization.

2540353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22594.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 2540353 is about 1593.8484871530. The cubic root of 2540353 is about 136.4472193708.

Subtracting 2540353 from its reverse (3530452), we obtain a palindrome (990099).

The spelling of 2540353 in words is "two million, five hundred forty thousand, three hundred fifty-three".