255902947 has 2 divisors, whose sum is σ = 255902948. Its totient is φ = 255902946.

The previous prime is 255902939. The next prime is 255902987. The reversal of 255902947 is 749209552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255902947 - 2³ = 255902939 is a prime.

It is not a weakly prime, because it can be changed into another prime (255902917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127951473 + 127951474.

It is an arithmetic number, because the mean of its divisors is an integer number (127951474).

Almost surely, 2^255902947 is an apocalyptic number.

255902947 is a deficient number, since it is larger than the sum of its proper divisors (1).

255902947 is an equidigital number, since it uses as much as digits as its factorization.

255902947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 255902947 is about 15996.9668062417. The cubic root of 255902947 is about 634.8801700022.

The spelling of 255902947 in words is "two hundred fifty-five million, nine hundred two thousand, nine hundred forty-seven".