2556055 has 4 divisors (see below), whose sum is σ = 3067272. Its totient is φ = 2044840.

The previous prime is 2556041. The next prime is 2556061. The reversal of 2556055 is 5506552.

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

It is not a de Polignac number, because 2556055 - 2⁵ = 2556023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255601 + ... + 255610.

It is an arithmetic number, because the mean of its divisors is an integer number (766818).

2^2556055 is an apocalyptic number.

2556055 is a deficient number, since it is larger than the sum of its proper divisors (511217).

2556055 is an equidigital number, since it uses as much as digits as its factorization.

2556055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511216.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 2556055 is about 1598.7667121879. The cubic root of 2556055 is about 136.7277702838.

The spelling of 2556055 in words is "two million, five hundred fifty-six thousand, fifty-five".