255296491 has 2 divisors, whose sum is σ = 255296492. Its totient is φ = 255296490.

The previous prime is 255296477. The next prime is 255296513. The reversal of 255296491 is 194692552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255296491 - 2¹¹ = 255294443 is a prime.

It is not a weakly prime, because it can be changed into another prime (255276491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127648245 + 127648246.

It is an arithmetic number, because the mean of its divisors is an integer number (127648246).

Almost surely, 2^255296491 is an apocalyptic number.

255296491 is a deficient number, since it is larger than the sum of its proper divisors (1).

255296491 is an equidigital number, since it uses as much as digits as its factorization.

255296491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 43.

The square root of 255296491 is about 15978.0002190512. Note that the first 3 decimals coincide. The cubic root of 255296491 is about 634.3782460656.

The spelling of 255296491 in words is "two hundred fifty-five million, two hundred ninety-six thousand, four hundred ninety-one".