2543755 has 8 divisors (see below), whose sum is σ = 3066624. Its totient is φ = 2025600.

The previous prime is 2543753. The next prime is 2543771. The reversal of 2543755 is 5573452.

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

It is not a de Polignac number, because 2543755 - 2¹ = 2543753 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 5⁸ + 4⁷ + 3¹² + 7⁷ + 5⁸ + 5⁸ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2543753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150 + ... + 2260.

It is an arithmetic number, because the mean of its divisors is an integer number (383328).

2^2543755 is an apocalyptic number.

2543755 is a deficient number, since it is larger than the sum of its proper divisors (522869).

2543755 is a wasteful number, since it uses less digits than its factorization.

2543755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357.

The product of its digits is 21000, while the sum is 31.

The square root of 2543755 is about 1594.9153582557. The cubic root of 2543755 is about 136.5081015108.

The spelling of 2543755 in words is "two million, five hundred forty-three thousand, seven hundred fifty-five".