255518611 has 2 divisors, whose sum is σ = 255518612. Its totient is φ = 255518610.

The previous prime is 255518603. The next prime is 255518621. The reversal of 255518611 is 116815552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255518611 - 2³ = 255518603 is a prime.

It is not a weakly prime, because it can be changed into another prime (255518621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127759305 + 127759306.

It is an arithmetic number, because the mean of its divisors is an integer number (127759306).

Almost surely, 2^255518611 is an apocalyptic number.

255518611 is a deficient number, since it is larger than the sum of its proper divisors (1).

255518611 is an equidigital number, since it uses as much as digits as its factorization.

255518611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12000, while the sum is 34.

The square root of 255518611 is about 15984.9495150907. The cubic root of 255518611 is about 634.5621724089.

The spelling of 255518611 in words is "two hundred fifty-five million, five hundred eighteen thousand, six hundred eleven".