2555743 has 4 divisors (see below), whose sum is σ = 2561328. Its totient is φ = 2550160.

The previous prime is 2555731. The next prime is 2555753. The reversal of 2555743 is 3475552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2555743 - 2⁵ = 2555711 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 5³ + 5⁷ + 5⁹ + 7 + 4³ + 3² .

It is a Duffinian number.

2555743 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2038 + ... + 3043.

It is an arithmetic number, because the mean of its divisors is an integer number (640332).

2^2555743 is an apocalyptic number.

2555743 is a deficient number, since it is larger than the sum of its proper divisors (5585).

2555743 is an equidigital number, since it uses as much as digits as its factorization.

2555743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5584.

The product of its digits is 21000, while the sum is 31.

The square root of 2555743 is about 1598.6691339987. The cubic root of 2555743 is about 136.7222069188.

It can be divided in two parts, 25557 and 43, that added together give a square (25600 = 160²).

The spelling of 2555743 in words is "two million, five hundred fifty-five thousand, seven hundred forty-three".