2565853 has 4 divisors (see below), whose sum is σ = 2625568. Its totient is φ = 2506140.

The previous prime is 2565847. The next prime is 2565863. The reversal of 2565853 is 3585652.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2565853 is a prime.

It is an Ulam number.

It is a Duffinian number.

2565853 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29793 + ... + 29878.

It is an arithmetic number, because the mean of its divisors is an integer number (656392).

2^2565853 is an apocalyptic number.

It is an amenable number.

2565853 is a deficient number, since it is larger than the sum of its proper divisors (59715).

2565853 is an equidigital number, since it uses as much as digits as its factorization.

2565853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59714.

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

The square root of 2565853 is about 1601.8280182342. The cubic root of 2565853 is about 136.9022514771.

The spelling of 2565853 in words is "two million, five hundred sixty-five thousand, eight hundred fifty-three".