2543959 has 4 divisors (see below), whose sum is σ = 2775240. Its totient is φ = 2312680.

The previous prime is 2543939. The next prime is 2543963. The reversal of 2543959 is 9593452.

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 2543959 - 2¹¹ = 2541911 is a prime.

It is a d-powerful number, because it can be written as 2 + 5 + 4⁴ + 3¹² + 9² + 5⁹ + 9⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115624 + ... + 115645.

It is an arithmetic number, because the mean of its divisors is an integer number (693810).

2^2543959 is an apocalyptic number.

2543959 is a deficient number, since it is larger than the sum of its proper divisors (231281).

2543959 is a wasteful number, since it uses less digits than its factorization.

2543959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231280.

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

The square root of 2543959 is about 1594.9793102106. The cubic root of 2543959 is about 136.5117505661.

The spelling of 2543959 in words is "two million, five hundred forty-three thousand, nine hundred fifty-nine".