255043121 has 2 divisors, whose sum is σ = 255043122. Its totient is φ = 255043120.

The previous prime is 255043111. The next prime is 255043133. The reversal of 255043121 is 121340552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250778896 + 4264225 = 15836^2 + 2065^2 .

It is a cyclic number.

It is not a de Polignac number, because 255043121 - 2⁶ = 255043057 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (255043111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127521560 + 127521561.

It is an arithmetic number, because the mean of its divisors is an integer number (127521561).

Almost surely, 2^255043121 is an apocalyptic number.

It is an amenable number.

255043121 is a deficient number, since it is larger than the sum of its proper divisors (1).

255043121 is an equidigital number, since it uses as much as digits as its factorization.

255043121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 255043121 is about 15970.0695364798. The cubic root of 255043121 is about 634.1683128776.

Adding to 255043121 its reverse (121340552), we get a palindrome (376383673).

The spelling of 255043121 in words is "two hundred fifty-five million, forty-three thousand, one hundred twenty-one".