2555786 has 8 divisors (see below), whose sum is σ = 3841344. Its totient is φ = 1275340.

The previous prime is 2555779. The next prime is 2555809. The reversal of 2555786 is 6875552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2¹⁸ + 5² + 5⁷ + 5⁹ + 7 + 8⁶ + 6³ .

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, 431 + ... + 2301.

It is an arithmetic number, because the mean of its divisors is an integer number (480168).

2^2555786 is an apocalyptic number.

2555786 is a deficient number, since it is larger than the sum of its proper divisors (1285558).

2555786 is a wasteful number, since it uses less digits than its factorization.

2555786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556.

The product of its digits is 84000, while the sum is 38.

The square root of 2555786 is about 1598.6825826286. The cubic root of 2555786 is about 136.7229736916.

The spelling of 2555786 in words is "two million, five hundred fifty-five thousand, seven hundred eighty-six".