2556246 has 48 divisors (see below), whose sum is σ = 6435072. Its totient is φ = 662640.

The previous prime is 2556233. The next prime is 2556259. The reversal of 2556246 is 6426552.

It is an interprime number because it is at equal distance from previous prime (2556233) and next prime (2556259).

It is a super-2 number, since 2×2556246² = 13068787225032, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4831 + ... + 5333.

It is an arithmetic number, because the mean of its divisors is an integer number (134064).

2^2556246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2556246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3217536).

2556246 is an abundant number, since it is smaller than the sum of its proper divisors (3878826).

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

2556246 is a wasteful number, since it uses less digits than its factorization.

2556246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 526 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 2556246 is about 1598.8264446149. The cubic root of 2556246 is about 136.7311758382.

The spelling of 2556246 in words is "two million, five hundred fifty-six thousand, two hundred forty-six".