255118081 has 2 divisors, whose sum is σ = 255118082. Its totient is φ = 255118080.

The previous prime is 255118069. The next prime is 255118103. The reversal of 255118081 is 180811552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174477681 + 80640400 = 13209^2 + 8980^2 .

It is a cyclic number.

It is not a de Polignac number, because 255118081 - 2⁵ = 255118049 is a prime.

It is a super-2 number, since 2×255118081² = 130170470506245122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (255118181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127559040 + 127559041.

It is an arithmetic number, because the mean of its divisors is an integer number (127559041).

Almost surely, 2^255118081 is an apocalyptic number.

It is an amenable number.

255118081 is a deficient number, since it is larger than the sum of its proper divisors (1).

255118081 is an equidigital number, since it uses as much as digits as its factorization.

255118081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 31.

The square root of 255118081 is about 15972.4162542804. The cubic root of 255118081 is about 634.2304364903.

It can be divided in two parts, 255 and 118081, that added together give a square (118336 = 344²).

The spelling of 255118081 in words is "two hundred fifty-five million, one hundred eighteen thousand, eighty-one".