2355543 has 12 divisors (see below), whose sum is σ = 3446560. Its totient is φ = 1550016.

The previous prime is 2355539. The next prime is 2355557. The reversal of 2355543 is 3455532.

It is not a de Polignac number, because 2355543 - 2² = 2355539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2355533) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 946 + ... + 2367.

2^2355543 is an apocalyptic number.

2355543 is a deficient number, since it is larger than the sum of its proper divisors (1091017).

2355543 is a wasteful number, since it uses less digits than its factorization.

2355543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3398 (or 3395 counting only the distinct ones).

The product of its digits is 9000, while the sum is 27.

The square root of 2355543 is about 1534.7778340854. Note that the first 3 decimals coincide. The cubic root of 2355543 is about 133.0547384309.

It can be divided in two parts, 235 and 5543, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 2355543 in words is "two million, three hundred fifty-five thousand, five hundred forty-three".