255670287 has 4 divisors (see below), whose sum is σ = 340893720. Its totient is φ = 170446856.

The previous prime is 255670267. The next prime is 255670321. The reversal of 255670287 is 782076552.

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 255670287 - 2⁶ = 255670223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255670267) 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, 42611712 + ... + 42611717.

It is an arithmetic number, because the mean of its divisors is an integer number (85223430).

Almost surely, 2^255670287 is an apocalyptic number.

255670287 is a deficient number, since it is larger than the sum of its proper divisors (85223433).

255670287 is an equidigital number, since it uses as much as digits as its factorization.

255670287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85223432.

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 255670287 is about 15989.6931490257. The cubic root of 255670287 is about 634.6877064013.

The spelling of 255670287 in words is "two hundred fifty-five million, six hundred seventy thousand, two hundred eighty-seven".