2255990 has 16 divisors (see below), whose sum is σ = 4430160. Its totient is φ = 820320.

The previous prime is 2255989. The next prime is 2255999. The reversal of 2255990 is 995522.

2255990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255999) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10145 + ... + 10364.

It is an arithmetic number, because the mean of its divisors is an integer number (276885).

2^2255990 is an apocalyptic number.

2255990 is a deficient number, since it is larger than the sum of its proper divisors (2174170).

2255990 is a wasteful number, since it uses less digits than its factorization.

2255990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20527.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 2255990 is about 1501.9953395400. The cubic root of 2255990 is about 131.1532499385.

The spelling of 2255990 in words is "two million, two hundred fifty-five thousand, nine hundred ninety".