2278543 has 2 divisors, whose sum is σ = 2278544. Its totient is φ = 2278542.

The previous prime is 2278519. The next prime is 2278553. The reversal of 2278543 is 3458722.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2278543 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 2²¹ + 7 + 8 + 5 + 4⁶ + 3¹¹ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2278553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139271 + 1139272.

It is an arithmetic number, because the mean of its divisors is an integer number (1139272).

2^2278543 is an apocalyptic number.

2278543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278543 is an equidigital number, since it uses as much as digits as its factorization.

2278543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 31.

The square root of 2278543 is about 1509.4843490411. The cubic root of 2278543 is about 131.5888453943.

The spelling of 2278543 in words is "two million, two hundred seventy-eight thousand, five hundred forty-three".