255281783 has 2 divisors, whose sum is σ = 255281784. Its totient is φ = 255281782.

The previous prime is 255281779. The next prime is 255281791. The reversal of 255281783 is 387182552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255281783 - 2² = 255281779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255281783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255281713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127640891 + 127640892.

It is an arithmetic number, because the mean of its divisors is an integer number (127640892).

Almost surely, 2^255281783 is an apocalyptic number.

255281783 is a deficient number, since it is larger than the sum of its proper divisors (1).

255281783 is an equidigital number, since it uses as much as digits as its factorization.

255281783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 41.

The square root of 255281783 is about 15977.5399545737. The cubic root of 255281783 is about 634.3660633489.

The spelling of 255281783 in words is "two hundred fifty-five million, two hundred eighty-one thousand, seven hundred eighty-three".