255636223 has 2 divisors, whose sum is σ = 255636224. Its totient is φ = 255636222.

The previous prime is 255636217. The next prime is 255636233. The reversal of 255636223 is 322636552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255636223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255636233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127818111 + 127818112.

It is an arithmetic number, because the mean of its divisors is an integer number (127818112).

Almost surely, 2^255636223 is an apocalyptic number.

255636223 is a deficient number, since it is larger than the sum of its proper divisors (1).

255636223 is an equidigital number, since it uses as much as digits as its factorization.

255636223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 34.

The square root of 255636223 is about 15988.6279273739. The cubic root of 255636223 is about 634.6595178014.

The spelling of 255636223 in words is "two hundred fifty-five million, six hundred thirty-six thousand, two hundred twenty-three".