2558555 has 4 divisors (see below), whose sum is σ = 3070272. Its totient is φ = 2046840.

The previous prime is 2558533. The next prime is 2558581. The reversal of 2558555 is 5558552.

It is a happy number.

2558555 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 is not a de Polignac number, because 2558555 - 2¹² = 2554459 is a prime.

It is a Duffinian 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, 255851 + ... + 255860.

It is an arithmetic number, because the mean of its divisors is an integer number (767568).

2^2558555 is an apocalyptic number.

2558555 is a deficient number, since it is larger than the sum of its proper divisors (511717).

2558555 is an equidigital number, since it uses as much as digits as its factorization.

2558555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511716.

The product of its digits is 50000, while the sum is 35.

The square root of 2558555 is about 1599.5483737605. The cubic root of 2558555 is about 136.7723321894.

It can be divided in two parts, 2558 and 555, that added together give a palindrome (3113).

The spelling of 2558555 in words is "two million, five hundred fifty-eight thousand, five hundred fifty-five".