2445543 has 12 divisors (see below), whose sum is σ = 3548688. Its totient is φ = 1622880.

The previous prime is 2445533. The next prime is 2445557. The reversal of 2445543 is 3455442.

2445543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2445543 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2445523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2046 + ... + 3012.

It is an arithmetic number, because the mean of its divisors is an integer number (295724).

2^2445543 is an apocalyptic number.

2445543 is a deficient number, since it is larger than the sum of its proper divisors (1103145).

2445543 is a wasteful number, since it uses less digits than its factorization.

2445543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254 (or 1251 counting only the distinct ones).

The product of its digits is 9600, while the sum is 27.

The square root of 2445543 is about 1563.8231997256. The cubic root of 2445543 is about 134.7281773319.

It can be divided in two parts, 2445 and 543, that multiplied together give a triangular number (1327635 = T₁₆₂₉).

The spelling of 2445543 in words is "two million, four hundred forty-five thousand, five hundred forty-three".