2550780 has 72 divisors (see below), whose sum is σ = 7967232. Its totient is φ = 660096.

The previous prime is 2550767. The next prime is 2550791. The reversal of 2550780 is 870552.

It is a happy number.

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, 6469 + ... + 6851.

It is an arithmetic number, because the mean of its divisors is an integer number (110656).

2^2550780 is an apocalyptic number.

2550780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2550780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3983616).

2550780 is an abundant number, since it is smaller than the sum of its proper divisors (5416452).

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

2550780 is a wasteful number, since it uses less digits than its factorization.

2550780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435 (or 430 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 2550780 is about 1597.1161510673. The cubic root of 2550780 is about 136.6336492386.

It can be divided in two parts, 25 and 50780, that added together give a palindrome (50805).

The spelling of 2550780 in words is "two million, five hundred fifty thousand, seven hundred eighty".