2550543 has 4 divisors (see below), whose sum is σ = 3400728. Its totient is φ = 1700360.

The previous prime is 2550497. The next prime is 2550551. The reversal of 2550543 is 3450552.

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 2550543 - 2⁶ = 2550479 is a prime.

It is a D-number.

2550543 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2550563) 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 3 ways as a sum of consecutive naturals, for example, 425088 + ... + 425093.

It is an arithmetic number, because the mean of its divisors is an integer number (850182).

2^2550543 is an apocalyptic number.

2550543 is a deficient number, since it is larger than the sum of its proper divisors (850185).

2550543 is an equidigital number, since it uses as much as digits as its factorization.

2550543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850184.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 2550543 is about 1597.0419531121. The cubic root of 2550543 is about 136.6294174378.

Subtracting 2550543 from its reverse (3450552), we obtain a palindrome (900009).

The spelling of 2550543 in words is "two million, five hundred fifty thousand, five hundred forty-three".