255776971 has 4 divisors (see below), whose sum is σ = 255836944. Its totient is φ = 255717000.

The previous prime is 255776953. The next prime is 255776981. The reversal of 255776971 is 179677552.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 255776971 - 2¹⁷ = 255645899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255776981) 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, 23055 + ... + 32296.

It is an arithmetic number, because the mean of its divisors is an integer number (63959236).

Almost surely, 2^255776971 is an apocalyptic number.

255776971 is a deficient number, since it is larger than the sum of its proper divisors (59973).

255776971 is an equidigital number, since it uses as much as digits as its factorization.

255776971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59972.

The product of its digits is 926100, while the sum is 49.

The square root of 255776971 is about 15993.0288250850. The cubic root of 255776971 is about 634.7759732185.

The spelling of 255776971 in words is "two hundred fifty-five million, seven hundred seventy-six thousand, nine hundred seventy-one".