2555990 has 16 divisors (see below), whose sum is σ = 4801248. Its totient is φ = 977856.

The previous prime is 2555989. The next prime is 2556011. The reversal of 2555990 is 995552.

It is a self number, because there is not a number n which added to its sum of digits gives 2555990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5327 + ... + 5786.

It is an arithmetic number, because the mean of its divisors is an integer number (300078).

2^2555990 is an apocalyptic number.

2555990 is a deficient number, since it is larger than the sum of its proper divisors (2245258).

2555990 is a wasteful number, since it uses less digits than its factorization.

2555990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11143.

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 2555990 is about 1598.7463838896. The cubic root of 2555990 is about 136.7266112867.

The spelling of 2555990 in words is "two million, five hundred fifty-five thousand, nine hundred ninety".