255605287 has 32 divisors (see below), whose sum is σ = 312998400. Its totient is φ = 204156288.

The previous prime is 255605269. The next prime is 255605291. The reversal of 255605287 is 782506552.

It is not a de Polignac number, because 255605287 - 2¹⁹ = 255080999 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 (255605297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 656889 + ... + 657277.

It is an arithmetic number, because the mean of its divisors is an integer number (9781200).

Almost surely, 2^255605287 is an apocalyptic number.

255605287 is a deficient number, since it is larger than the sum of its proper divisors (57393113).

255605287 is a wasteful number, since it uses less digits than its factorization.

255605287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535.

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 255605287 is about 15987.6604604926. The cubic root of 255605287 is about 634.6339155104.

The spelling of 255605287 in words is "two hundred fifty-five million, six hundred five thousand, two hundred eighty-seven".