255971571 has 4 divisors (see below), whose sum is σ = 341295432. Its totient is φ = 170647712.

The previous prime is 255971563. The next prime is 255971579. The reversal of 255971571 is 175179552.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (255971563) and next prime (255971579).

It is a cyclic number.

It is not a de Polignac number, because 255971571 - 2³ = 255971563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255971579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42661926 + ... + 42661931.

It is an arithmetic number, because the mean of its divisors is an integer number (85323858).

Almost surely, 2^255971571 is an apocalyptic number.

255971571 is a deficient number, since it is larger than the sum of its proper divisors (85323861).

255971571 is an equidigital number, since it uses as much as digits as its factorization.

255971571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85323860.

The product of its digits is 110250, while the sum is 42.

The square root of 255971571 is about 15999.1115690841. Note that the first 3 decimals coincide. The cubic root of 255971571 is about 634.9369156336.

The spelling of 255971571 in words is "two hundred fifty-five million, nine hundred seventy-one thousand, five hundred seventy-one".