255953947 has 2 divisors, whose sum is σ = 255953948. Its totient is φ = 255953946.

The previous prime is 255953941. The next prime is 255953969. The reversal of 255953947 is 749359552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255953947 - 2¹⁹ = 255429659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255953947.

It is not a weakly prime, because it can be changed into another prime (255953941) 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, 127976973 + 127976974.

It is an arithmetic number, because the mean of its divisors is an integer number (127976974).

Almost surely, 2^255953947 is an apocalyptic number.

255953947 is a deficient number, since it is larger than the sum of its proper divisors (1).

255953947 is an equidigital number, since it uses as much as digits as its factorization.

255953947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1701000, while the sum is 49.

The square root of 255953947 is about 15998.5607790201. The cubic root of 255953947 is about 634.9223432015.

The spelling of 255953947 in words is "two hundred fifty-five million, nine hundred fifty-three thousand, nine hundred forty-seven".