2555826 has 64 divisors (see below), whose sum is σ = 6537216. Its totient is φ = 648000.

The previous prime is 2555809. The next prime is 2555837. The reversal of 2555826 is 6285552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16851 + ... + 17001.

It is an arithmetic number, because the mean of its divisors is an integer number (102144).

2^2555826 is an apocalyptic number.

2555826 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2555826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3268608).

2555826 is an abundant number, since it is smaller than the sum of its proper divisors (3981390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2555826 is a wasteful number, since it uses less digits than its factorization.

2555826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207.

The product of its digits is 24000, while the sum is 33.

The square root of 2555826 is about 1598.6950928804. The cubic root of 2555826 is about 136.7236869608.

The spelling of 2555826 in words is "two million, five hundred fifty-five thousand, eight hundred twenty-six".