255243143 has 2 divisors, whose sum is σ = 255243144. Its totient is φ = 255243142.

The previous prime is 255243139. The next prime is 255243161. The reversal of 255243143 is 341342552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255243143 - 2² = 255243139 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255248143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127621571 + 127621572.

It is an arithmetic number, because the mean of its divisors is an integer number (127621572).

Almost surely, 2^255243143 is an apocalyptic number.

255243143 is a deficient number, since it is larger than the sum of its proper divisors (1).

255243143 is an equidigital number, since it uses as much as digits as its factorization.

255243143 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 255243143 is about 15976.3307113993. The cubic root of 255243143 is about 634.3340553965.

Adding to 255243143 its reverse (341342552), we get a palindrome (596585695).

The spelling of 255243143 in words is "two hundred fifty-five million, two hundred forty-three thousand, one hundred forty-three".