2543291 has 8 divisors (see below), whose sum is σ = 2610144. Its totient is φ = 2477440.

The previous prime is 2543287. The next prime is 2543309. The reversal of 2543291 is 1923452.

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

It is a cyclic number.

It is not a de Polignac number, because 2543291 - 2² = 2543287 is a prime.

It is a super-2 number, since 2×2543291² = 12936658221362, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2543291.

It is not an unprimeable number, because it can be changed into a prime (2543201) 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, 7865 + ... + 8181.

It is an arithmetic number, because the mean of its divisors is an integer number (326268).

2^2543291 is an apocalyptic number.

2543291 is a deficient number, since it is larger than the sum of its proper divisors (66853).

2543291 is a wasteful number, since it uses less digits than its factorization.

2543291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501.

The product of its digits is 2160, while the sum is 26.

The square root of 2543291 is about 1594.7698893571. The cubic root of 2543291 is about 136.4998009720.

The spelling of 2543291 in words is "two million, five hundred forty-three thousand, two hundred ninety-one".