2555439 has 4 divisors (see below), whose sum is σ = 3407256. Its totient is φ = 1703624.

The previous prime is 2555429. The next prime is 2555453. The reversal of 2555439 is 9345552.

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

It is a cyclic number.

It is not a de Polignac number, because 2555439 - 2¹³ = 2547247 is a prime.

It is a D-number.

2555439 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555429) 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, 425904 + ... + 425909.

It is an arithmetic number, because the mean of its divisors is an integer number (851814).

2^2555439 is an apocalyptic number.

2555439 is a deficient number, since it is larger than the sum of its proper divisors (851817).

2555439 is an equidigital number, since it uses as much as digits as its factorization.

2555439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851816.

The product of its digits is 27000, while the sum is 33.

The square root of 2555439 is about 1598.5740520852. The cubic root of 2555439 is about 136.7167857688.

It can be divided in two parts, 255543 and 9, that added together give a palindrome (255552).

The spelling of 2555439 in words is "two million, five hundred fifty-five thousand, four hundred thirty-nine".