255871487 has 8 divisors (see below), whose sum is σ = 260312304. Its totient is φ = 251463168.

The previous prime is 255871477. The next prime is 255871493. The reversal of 255871487 is 784178552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255871487 - 2¹⁶ = 255805951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255871477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8033 + ... + 24005.

It is an arithmetic number, because the mean of its divisors is an integer number (32539038).

Almost surely, 2^255871487 is an apocalyptic number.

255871487 is a deficient number, since it is larger than the sum of its proper divisors (4440817).

255871487 is a wasteful number, since it uses less digits than its factorization.

255871487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16249.

The product of its digits is 627200, while the sum is 47.

The square root of 255871487 is about 15995.9834646076. The cubic root of 255871487 is about 634.8541521324.

The spelling of 255871487 in words is "two hundred fifty-five million, eight hundred seventy-one thousand, four hundred eighty-seven".