2555720 has 32 divisors (see below), whose sum is σ = 5798520. Its totient is φ = 1013760.

The previous prime is 2555711. The next prime is 2555731. The reversal of 2555720 is 275552.

2555720 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1110916 + 1444804 = 1054^2 + 1202^2 .

It is a d-powerful number, because it can be written as 2⁷ + 5 + 5⁷ + 5⁹ + 7² + 2¹⁹ + 0 .

It is a self number, because there is not a number n which added to its sum of digits gives 2555720.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7064 + ... + 7416.

2^2555720 is an apocalyptic number.

2555720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2555720 is an abundant number, since it is smaller than the sum of its proper divisors (3242800).

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

2555720 is a wasteful number, since it uses less digits than its factorization.

2555720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 2555720 is about 1598.6619404990. The cubic root of 2555720 is about 136.7217967811.

The spelling of 2555720 in words is "two million, five hundred fifty-five thousand, seven hundred twenty".