2556450 has 144 divisors (see below), whose sum is σ = 8124480. Its totient is φ = 570240.

The previous prime is 2556419. The next prime is 2556451. The reversal of 2556450 is 546552.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2556451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 111139 + ... + 111161.

It is an arithmetic number, because the mean of its divisors is an integer number (56420).

2^2556450 is an apocalyptic number.

2556450 is the 855-th nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2556450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4062240).

2556450 is an abundant number, since it is smaller than the sum of its proper divisors (5568030).

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

2556450 is a wasteful number, since it uses less digits than its factorization.

2556450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2556450 is about 1598.8902401353. The cubic root of 2556450 is about 136.7348129970.

The spelling of 2556450 in words is "two million, five hundred fifty-six thousand, four hundred fifty".