2543045 has 8 divisors (see below), whose sum is σ = 3066360. Its totient is φ = 2024640.

The previous prime is 2543033. The next prime is 2543059. The reversal of 2543045 is 5403452.

It can be written as a sum of positive squares in 4 ways, for example, as 988036 + 1555009 = 994^2 + 1247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2543045 - 2¹⁰ = 2542021 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 5 + 4³ + 3³ + 0 + 4⁸ + 5⁹ .

It is a self number, because there is not a number n which added to its sum of digits gives 2543045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35 + ... + 2255.

It is an arithmetic number, because the mean of its divisors is an integer number (383295).

2^2543045 is an apocalyptic number.

It is an amenable number.

2543045 is a deficient number, since it is larger than the sum of its proper divisors (523315).

2543045 is a wasteful number, since it uses less digits than its factorization.

2543045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 2543045 is about 1594.6927603774. The cubic root of 2543045 is about 136.4953998459.

Adding to 2543045 its reverse (5403452), we get a palindrome (7946497).

The spelling of 2543045 in words is "two million, five hundred forty-three thousand, forty-five".