255996953 has 2 divisors, whose sum is σ = 255996954. Its totient is φ = 255996952.

The previous prime is 255996919. The next prime is 255996959. The reversal of 255996953 is 359699552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235683904 + 20313049 = 15352^2 + 4507^2 .

It is a cyclic number.

It is not a de Polignac number, because 255996953 - 2⁶ = 255996889 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 255996895 and 255996904.

It is not a weakly prime, because it can be changed into another prime (255996959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127998476 + 127998477.

It is an arithmetic number, because the mean of its divisors is an integer number (127998477).

Almost surely, 2^255996953 is an apocalyptic number.

It is an amenable number.

255996953 is a deficient number, since it is larger than the sum of its proper divisors (1).

255996953 is an equidigital number, since it uses as much as digits as its factorization.

255996953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3280500, while the sum is 53.

The square root of 255996953 is about 15999.9047809667. The cubic root of 255996953 is about 634.9579016049.

The spelling of 255996953 in words is "two hundred fifty-five million, nine hundred ninety-six thousand, nine hundred fifty-three".