255316121 has 2 divisors, whose sum is σ = 255316122. Its totient is φ = 255316120.

The previous prime is 255316111. The next prime is 255316151. The reversal of 255316121 is 121613552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237160000 + 18156121 = 15400^2 + 4261^2 .

It is a cyclic number.

It is not a de Polignac number, because 255316121 - 2⁶ = 255316057 is a prime.

It is not a weakly prime, because it can be changed into another prime (255316111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127658060 + 127658061.

It is an arithmetic number, because the mean of its divisors is an integer number (127658061).

Almost surely, 2^255316121 is an apocalyptic number.

It is an amenable number.

255316121 is a deficient number, since it is larger than the sum of its proper divisors (1).

255316121 is an equidigital number, since it uses as much as digits as its factorization.

255316121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 26.

The square root of 255316121 is about 15978.6144893730. The cubic root of 255316121 is about 634.3945049727.

Adding to 255316121 its reverse (121613552), we get a palindrome (376929673).

The spelling of 255316121 in words is "two hundred fifty-five million, three hundred sixteen thousand, one hundred twenty-one".