2555885 has 4 divisors (see below), whose sum is σ = 3067068. Its totient is φ = 2044704.

The previous prime is 2555881. The next prime is 2555893. The reversal of 2555885 is 5885552.

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 808201 + 1747684 = 899^2 + 1322^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555885 - 2² = 2555881 is a prime.

It is a super-3 number, since 3×2555885³ = 50089325356463337375, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255584 + ... + 255593.

It is an arithmetic number, because the mean of its divisors is an integer number (766767).

2^2555885 is an apocalyptic number.

It is an amenable number.

2555885 is a deficient number, since it is larger than the sum of its proper divisors (511183).

2555885 is an equidigital number, since it uses as much as digits as its factorization.

2555885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511182.

The product of its digits is 80000, while the sum is 38.

The square root of 2555885 is about 1598.7135453232. The cubic root of 2555885 is about 136.7247390193.

The spelling of 2555885 in words is "two million, five hundred fifty-five thousand, eight hundred eighty-five".