2543297 has 4 divisors (see below), whose sum is σ = 2566740. Its totient is φ = 2519856.

The previous prime is 2543287. The next prime is 2543309. The reversal of 2543297 is 7923452.

It is a happy number.

2543297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 790321 + 1752976 = 889^2 + 1324^2 .

It is a cyclic number.

It is not a de Polignac number, because 2543297 - 2¹⁴ = 2526913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2543237) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11558 + ... + 11775.

It is an arithmetic number, because the mean of its divisors is an integer number (641685).

2^2543297 is an apocalyptic number.

It is an amenable number.

2543297 is a deficient number, since it is larger than the sum of its proper divisors (23443).

2543297 is a wasteful number, since it uses less digits than its factorization.

2543297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23442.

The product of its digits is 15120, while the sum is 32.

The square root of 2543297 is about 1594.7717705051. The cubic root of 2543297 is about 136.4999083130.

The spelling of 2543297 in words is "two million, five hundred forty-three thousand, two hundred ninety-seven".