2551040 has 36 divisors (see below), whose sum is σ = 6113604. Its totient is φ = 1019904.

The previous prime is 2551033. The next prime is 2551057. The reversal of 2551040 is 401552.

It can be written as a sum of positive squares in 2 ways, for example, as 1401856 + 1149184 = 1184^2 + 1072^2 .

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, 284 + ... + 2276.

2^2551040 is an apocalyptic number.

2551040 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 2551040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3056802).

2551040 is an abundant number, since it is smaller than the sum of its proper divisors (3562564).

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

2551040 is an equidigital number, since it uses as much as digits as its factorization.

2551040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014 (or 2000 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2551040 is about 1597.1975457031. The cubic root of 2551040 is about 136.6382914188.

Adding to 2551040 its reverse (401552), we get a palindrome (2952592).

The spelling of 2551040 in words is "two million, five hundred fifty-one thousand, forty".