255298987 has 2 divisors, whose sum is σ = 255298988. Its totient is φ = 255298986.

The previous prime is 255298973. The next prime is 255299017. The reversal of 255298987 is 789892552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255298987 is a prime.

It is not a weakly prime, because it can be changed into another prime (255298907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127649493 + 127649494.

It is an arithmetic number, because the mean of its divisors is an integer number (127649494).

Almost surely, 2^255298987 is an apocalyptic number.

255298987 is a deficient number, since it is larger than the sum of its proper divisors (1).

255298987 is an equidigital number, since it uses as much as digits as its factorization.

255298987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 55.

The square root of 255298987 is about 15978.0783262569. The cubic root of 255298987 is about 634.3803134695.

The spelling of 255298987 in words is "two hundred fifty-five million, two hundred ninety-eight thousand, nine hundred eighty-seven".