2543995 has 4 divisors (see below), whose sum is σ = 3052800. Its totient is φ = 2035192.

The previous prime is 2543971. The next prime is 2544011. The reversal of 2543995 is 5993452.

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 2543995 - 2⁵ = 2543963 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 5 + 4 + 3⁵ + 9⁵ + 9⁶ + 5⁹ .

It is an unprimeable number.

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, 254395 + ... + 254404.

It is an arithmetic number, because the mean of its divisors is an integer number (763200).

2^2543995 is an apocalyptic number.

2543995 is a deficient number, since it is larger than the sum of its proper divisors (508805).

2543995 is an equidigital number, since it uses as much as digits as its factorization.

2543995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508804.

The product of its digits is 48600, while the sum is 37.

The square root of 2543995 is about 1594.9905955836. The cubic root of 2543995 is about 136.5123944968.

The spelling of 2543995 in words is "two million, five hundred forty-three thousand, nine hundred ninety-five".