255516143 has 2 divisors, whose sum is σ = 255516144. Its totient is φ = 255516142.

The previous prime is 255516119. The next prime is 255516181. The reversal of 255516143 is 341615552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255516143 - 2¹⁶ = 255450607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255516113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127758071 + 127758072.

It is an arithmetic number, because the mean of its divisors is an integer number (127758072).

Almost surely, 2^255516143 is an apocalyptic number.

255516143 is a deficient number, since it is larger than the sum of its proper divisors (1).

255516143 is an equidigital number, since it uses as much as digits as its factorization.

255516143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 32.

The square root of 255516143 is about 15984.8723172880. The cubic root of 255516143 is about 634.5601293686.

The spelling of 255516143 in words is "two hundred fifty-five million, five hundred sixteen thousand, one hundred forty-three".