2591243 has 2 divisors, whose sum is σ = 2591244. Its totient is φ = 2591242.

The previous prime is 2591233. The next prime is 2591261. The reversal of 2591243 is 3421952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2591243 - 2¹² = 2587147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2591213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1295621 + 1295622.

It is an arithmetic number, because the mean of its divisors is an integer number (1295622).

2^2591243 is an apocalyptic number.

2591243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2591243 is an equidigital number, since it uses as much as digits as its factorization.

2591243 is an evil number, because the sum of its binary digits is even.

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

The square root of 2591243 is about 1609.7338289295. The cubic root of 2591243 is about 137.3523351395.

The spelling of 2591243 in words is "two million, five hundred ninety-one thousand, two hundred forty-three".