255634133 has 2 divisors, whose sum is σ = 255634134. Its totient is φ = 255634132.

The previous prime is 255634129. The next prime is 255634163. The reversal of 255634133 is 331436552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159946609 + 95687524 = 12647^2 + 9782^2 .

It is a cyclic number.

It is not a de Polignac number, because 255634133 - 2² = 255634129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255634133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255634123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127817066 + 127817067.

It is an arithmetic number, because the mean of its divisors is an integer number (127817067).

Almost surely, 2^255634133 is an apocalyptic number.

It is an amenable number.

255634133 is a deficient number, since it is larger than the sum of its proper divisors (1).

255634133 is an equidigital number, since it uses as much as digits as its factorization.

255634133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 32.

The square root of 255634133 is about 15988.5625682861. The cubic root of 255634133 is about 634.6577882056.

The spelling of 255634133 in words is "two hundred fifty-five million, six hundred thirty-four thousand, one hundred thirty-three".