255874247 has 2 divisors, whose sum is σ = 255874248. Its totient is φ = 255874246.

The previous prime is 255874243. The next prime is 255874249. The reversal of 255874247 is 742478552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255874247 - 2² = 255874243 is a prime.

Together with 255874249, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 255874198 and 255874207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255874243) 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, 127937123 + 127937124.

It is an arithmetic number, because the mean of its divisors is an integer number (127937124).

Almost surely, 2^255874247 is an apocalyptic number.

255874247 is a deficient number, since it is larger than the sum of its proper divisors (1).

255874247 is an equidigital number, since it uses as much as digits as its factorization.

255874247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 627200, while the sum is 44.

The square root of 255874247 is about 15996.0697360320. The cubic root of 255874247 is about 634.8564347772.

The spelling of 255874247 in words is "two hundred fifty-five million, eight hundred seventy-four thousand, two hundred forty-seven".