255442871 has 2 divisors, whose sum is σ = 255442872. Its totient is φ = 255442870.

The previous prime is 255442861. The next prime is 255442879. The reversal of 255442871 is 178244552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255442871 - 2¹⁴ = 255426487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255442879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127721435 + 127721436.

It is an arithmetic number, because the mean of its divisors is an integer number (127721436).

Almost surely, 2^255442871 is an apocalyptic number.

255442871 is a deficient number, since it is larger than the sum of its proper divisors (1).

255442871 is an equidigital number, since it uses as much as digits as its factorization.

255442871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 89600, while the sum is 38.

The square root of 255442871 is about 15982.5802359944. The cubic root of 255442871 is about 634.4994679242.

The spelling of 255442871 in words is "two hundred fifty-five million, four hundred forty-two thousand, eight hundred seventy-one".