255530311 has 2 divisors, whose sum is σ = 255530312. Its totient is φ = 255530310.

The previous prime is 255530309. The next prime is 255530321. The reversal of 255530311 is 113035552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255530311 - 2¹ = 255530309 is a prime.

Together with 255530309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255530321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127765155 + 127765156.

It is an arithmetic number, because the mean of its divisors is an integer number (127765156).

Almost surely, 2^255530311 is an apocalyptic number.

255530311 is a deficient number, since it is larger than the sum of its proper divisors (1).

255530311 is an equidigital number, since it uses as much as digits as its factorization.

255530311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 255530311 is about 15985.3154801524. The cubic root of 255530311 is about 634.5718576318.

Adding to 255530311 its reverse (113035552), we get a palindrome (368565863).

The spelling of 255530311 in words is "two hundred fifty-five million, five hundred thirty thousand, three hundred eleven".