2578343 has 2 divisors, whose sum is σ = 2578344. Its totient is φ = 2578342.

The previous prime is 2578297. The next prime is 2578349. The reversal of 2578343 is 3438752.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2578343 - 2⁸ = 2578087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2578349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1289171 + 1289172.

It is an arithmetic number, because the mean of its divisors is an integer number (1289172).

2^2578343 is an apocalyptic number.

2578343 is a deficient number, since it is larger than the sum of its proper divisors (1).

2578343 is an equidigital number, since it uses as much as digits as its factorization.

2578343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 32.

The square root of 2578343 is about 1605.7219560061. The cubic root of 2578343 is about 137.1240285514.

The spelling of 2578343 in words is "two million, five hundred seventy-eight thousand, three hundred forty-three".