255508133 has 2 divisors, whose sum is σ = 255508134. Its totient is φ = 255508132.

The previous prime is 255508117. The next prime is 255508153. The reversal of 255508133 is 331805552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162231169 + 93276964 = 12737^2 + 9658^2 .

It is a cyclic number.

It is not a de Polignac number, because 255508133 - 2⁴ = 255508117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255508133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255508153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127754066 + 127754067.

It is an arithmetic number, because the mean of its divisors is an integer number (127754067).

Almost surely, 2^255508133 is an apocalyptic number.

It is an amenable number.

255508133 is a deficient number, since it is larger than the sum of its proper divisors (1).

255508133 is an equidigital number, since it uses as much as digits as its factorization.

255508133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 255508133 is about 15984.6217659349. The cubic root of 255508133 is about 634.5534985028.

The spelling of 255508133 in words is "two hundred fifty-five million, five hundred eight thousand, one hundred thirty-three".