255030689 has 2 divisors, whose sum is σ = 255030690. Its totient is φ = 255030688.

The previous prime is 255030661. The next prime is 255030731. The reversal of 255030689 is 986030552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218064289 + 36966400 = 14767^2 + 6080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255030689 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (255033689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127515344 + 127515345.

It is an arithmetic number, because the mean of its divisors is an integer number (127515345).

Almost surely, 2^255030689 is an apocalyptic number.

It is an amenable number.

255030689 is a deficient number, since it is larger than the sum of its proper divisors (1).

255030689 is an equidigital number, since it uses as much as digits as its factorization.

255030689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 255030689 is about 15969.6803036254. The cubic root of 255030689 is about 634.1580085958.

The spelling of 255030689 in words is "two hundred fifty-five million, thirty thousand, six hundred eighty-nine".