255667 has 2 divisors, whose sum is σ = 255668. Its totient is φ = 255666.
The previous prime is 255659. The next prime is 255679. The reversal of 255667 is 766552.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 255667 - 23 = 255659 is a prime.
It is a super-2 number, since 2×2556672 = 130731229778, which contains 22 as substring.
It is a Chen prime.
It is a plaindrome in base 10.
It is not a weakly prime, because it can be changed into another prime (255617) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127833 + 127834.
It is an arithmetic number, because the mean of its divisors is an integer number (127834).
2255667 is an apocalyptic number.
255667 is a deficient number, since it is larger than the sum of its proper divisors (1).
255667 is an equidigital number, since it uses as much as digits as its factorization.
255667 is an evil number, because the sum of its binary digits is even.
The product of its digits is 12600, while the sum is 31.
The square root of 255667 is about 505.6352440248. The cubic root of 255667 is about 63.4684986456.
The spelling of 255667 in words is "two hundred fifty-five thousand, six hundred sixty-seven".
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