2543265 has 16 divisors (see below), whose sum is σ = 4521600. Its totient is φ = 1356336.

The previous prime is 2543257. The next prime is 2543279. The reversal of 2543265 is 5623452.

2543265 = T₂₀₉ + T₂₁₀ + ... + T₂₈₉.

2543265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2543265 - 2³ = 2543257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 2⁵ + 5 + 4⁸ + 3⁵ + 2¹⁹ + 6² + 5⁹ .

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9285 + ... + 9554.

It is an arithmetic number, because the mean of its divisors is an integer number (282600).

2^2543265 is an apocalyptic number.

It is an amenable number.

2543265 is a deficient number, since it is larger than the sum of its proper divisors (1978335).

2543265 is a wasteful number, since it uses less digits than its factorization.

2543265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18853 (or 18847 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 2543265 is about 1594.7617376900. The cubic root of 2543265 is about 136.4993358258.

The spelling of 2543265 in words is "two million, five hundred forty-three thousand, two hundred sixty-five".