2543279 has 2 divisors, whose sum is σ = 2543280. Its totient is φ = 2543278.

The previous prime is 2543257. The next prime is 2543287. The reversal of 2543279 is 9723452.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2543279 - 2¹⁶ = 2477743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2543239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271639 + 1271640.

It is an arithmetic number, because the mean of its divisors is an integer number (1271640).

2^2543279 is an apocalyptic number.

2543279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543279 is an equidigital number, since it uses as much as digits as its factorization.

2543279 is an evil number, because the sum of its binary digits is even.

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

The square root of 2543279 is about 1594.7661270544. The cubic root of 2543279 is about 136.4995862895.

The spelling of 2543279 in words is "two million, five hundred forty-three thousand, two hundred seventy-nine".