255566323 has 2 divisors, whose sum is σ = 255566324. Its totient is φ = 255566322.

The previous prime is 255566303. The next prime is 255566383. The reversal of 255566323 is 323665552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255566323 - 2¹³ = 255558131 is a prime.

It is equal to p_13967065 and since 255566323 and 13967065 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (255566303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127783161 + 127783162.

It is an arithmetic number, because the mean of its divisors is an integer number (127783162).

Almost surely, 2^255566323 is an apocalyptic number.

255566323 is a deficient number, since it is larger than the sum of its proper divisors (1).

255566323 is an equidigital number, since it uses as much as digits as its factorization.

255566323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 37.

The square root of 255566323 is about 15986.4418492671. The cubic root of 255566323 is about 634.6016663959.

The spelling of 255566323 in words is "two hundred fifty-five million, five hundred sixty-six thousand, three hundred twenty-three".