255324191 has 2 divisors, whose sum is σ = 255324192. Its totient is φ = 255324190.

The previous prime is 255324169. The next prime is 255324217. The reversal of 255324191 is 191423552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255324191 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255324131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127662095 + 127662096.

It is an arithmetic number, because the mean of its divisors is an integer number (127662096).

Almost surely, 2^255324191 is an apocalyptic number.

255324191 is a deficient number, since it is larger than the sum of its proper divisors (1).

255324191 is an equidigital number, since it uses as much as digits as its factorization.

255324191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The square root of 255324191 is about 15978.8670124011. The cubic root of 255324191 is about 634.4011888563.

The spelling of 255324191 in words is "two hundred fifty-five million, three hundred twenty-four thousand, one hundred ninety-one".