254312543 has 2 divisors, whose sum is σ = 254312544. Its totient is φ = 254312542.

The previous prime is 254312533. The next prime is 254312609. The reversal of 254312543 is 345213452.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254312543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254312533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127156271 + 127156272.

It is an arithmetic number, because the mean of its divisors is an integer number (127156272).

Almost surely, 2^254312543 is an apocalyptic number.

254312543 is a deficient number, since it is larger than the sum of its proper divisors (1).

254312543 is an equidigital number, since it uses as much as digits as its factorization.

254312543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 29.

The square root of 254312543 is about 15947.1797820179. The cubic root of 254312543 is about 633.5622029399.

Adding to 254312543 its reverse (345213452), we get a palindrome (599525995).

Subtracting 254312543 from its reverse (345213452), we obtain a palindrome (90900909).

The spelling of 254312543 in words is "two hundred fifty-four million, three hundred twelve thousand, five hundred forty-three".