2555998 has 8 divisors (see below), whose sum is σ = 3899160. Its totient is φ = 1256280.

The previous prime is 2555989. The next prime is 2556011. The reversal of 2555998 is 8995552.

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

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, 10713 + ... + 10948.

It is an arithmetic number, because the mean of its divisors is an integer number (487395).

2^2555998 is an apocalyptic number.

2555998 is a deficient number, since it is larger than the sum of its proper divisors (1343162).

2555998 is a wasteful number, since it uses less digits than its factorization.

2555998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21722.

The product of its digits is 162000, while the sum is 43.

The square root of 2555998 is about 1598.7488858479. The cubic root of 2555998 is about 136.7267539336.

It can be divided in two parts, 2555 and 998, that added together give a palindrome (3553).

The spelling of 2555998 in words is "two million, five hundred fifty-five thousand, nine hundred ninety-eight".