2538565 has 4 divisors (see below), whose sum is σ = 3046284. Its totient is φ = 2030848.

The previous prime is 2538527. The next prime is 2538577. The reversal of 2538565 is 5658352.

It is a happy number.

2538565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1552516 + 986049 = 1246^2 + 993^2 .

It is a cyclic number.

It is not a de Polignac number, because 2538565 - 2¹¹ = 2536517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2538565.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 253852 + ... + 253861.

It is an arithmetic number, because the mean of its divisors is an integer number (761571).

2^2538565 is an apocalyptic number.

It is an amenable number.

2538565 is a deficient number, since it is larger than the sum of its proper divisors (507719).

2538565 is an equidigital number, since it uses as much as digits as its factorization.

2538565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507718.

The product of its digits is 36000, while the sum is 34.

The square root of 2538565 is about 1593.2874819065. The cubic root of 2538565 is about 136.4151995572.

The spelling of 2538565 in words is "two million, five hundred thirty-eight thousand, five hundred sixty-five".