255487 has 2 divisors, whose sum is σ = 255488. Its totient is φ = 255486.

The previous prime is 255473. The next prime is 255499. The reversal of 255487 is 784552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255487 - 2¹¹ = 253439 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 5⁵ + 4 + 5⁵ + 8³ + 7⁶ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127743 + 127744.

It is an arithmetic number, because the mean of its divisors is an integer number (127744).

2²⁵⁵⁴⁸⁷ is an apocalyptic number.

255487 is a deficient number, since it is larger than the sum of its proper divisors (1).

255487 is an equidigital number, since it uses as much as digits as its factorization.

255487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11200, while the sum is 31.

The square root of 255487 is about 505.4572187634. The cubic root of 255487 is about 63.4536003445.

The spelling of 255487 in words is "two hundred fifty-five thousand, four hundred eighty-seven".