255123971 has 2 divisors, whose sum is σ = 255123972. Its totient is φ = 255123970.

The previous prime is 255123961. The next prime is 255124097. The reversal of 255123971 is 179321552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255123971 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (255123931) 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, 127561985 + 127561986.

It is an arithmetic number, because the mean of its divisors is an integer number (127561986).

Almost surely, 2^255123971 is an apocalyptic number.

255123971 is a deficient number, since it is larger than the sum of its proper divisors (1).

255123971 is an equidigital number, since it uses as much as digits as its factorization.

255123971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 35.

The square root of 255123971 is about 15972.6006335850. The cubic root of 255123971 is about 634.2353173524.

The spelling of 255123971 in words is "two hundred fifty-five million, one hundred twenty-three thousand, nine hundred seventy-one".