255144121 has 2 divisors, whose sum is σ = 255144122. Its totient is φ = 255144120.

The previous prime is 255144101. The next prime is 255144139. The reversal of 255144121 is 121441552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228765625 + 26378496 = 15125^2 + 5136^2 .

It is a cyclic number.

It is not a de Polignac number, because 255144121 - 2¹¹ = 255142073 is a prime.

It is not a weakly prime, because it can be changed into another prime (255144101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127572060 + 127572061.

It is an arithmetic number, because the mean of its divisors is an integer number (127572061).

Almost surely, 2^255144121 is an apocalyptic number.

It is an amenable number.

255144121 is a deficient number, since it is larger than the sum of its proper divisors (1).

255144121 is an equidigital number, since it uses as much as digits as its factorization.

255144121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1600, while the sum is 25.

The square root of 255144121 is about 15973.2313887954. The cubic root of 255144121 is about 634.2520144705.

Adding to 255144121 its reverse (121441552), we get a palindrome (376585673).

The spelling of 255144121 in words is "two hundred fifty-five million, one hundred forty-four thousand, one hundred twenty-one".