2578943 has 2 divisors, whose sum is σ = 2578944. Its totient is φ = 2578942.

The previous prime is 2578931. The next prime is 2578963. The reversal of 2578943 is 3498752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2578943 - 2⁶ = 2578879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2578897 and 2578906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2578963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1289471 + 1289472.

It is an arithmetic number, because the mean of its divisors is an integer number (1289472).

2^2578943 is an apocalyptic number.

2578943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2578943 is an equidigital number, since it uses as much as digits as its factorization.

2578943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 2578943 is about 1605.9087769858. The cubic root of 2578943 is about 137.1346643275.

The spelling of 2578943 in words is "two million, five hundred seventy-eight thousand, nine hundred forty-three".