255535613 has 2 divisors, whose sum is σ = 255535614. Its totient is φ = 255535612.

The previous prime is 255535597. The next prime is 255535673. The reversal of 255535613 is 316535552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175218169 + 80317444 = 13237^2 + 8962^2 .

It is a cyclic number.

It is not a de Polignac number, because 255535613 - 2⁴ = 255535597 is a prime.

It is a super-2 number, since 2×255535613² = 130596899022571538, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255535673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127767806 + 127767807.

It is an arithmetic number, because the mean of its divisors is an integer number (127767807).

Almost surely, 2^255535613 is an apocalyptic number.

It is an amenable number.

255535613 is a deficient number, since it is larger than the sum of its proper divisors (1).

255535613 is an equidigital number, since it uses as much as digits as its factorization.

255535613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67500, while the sum is 35.

The square root of 255535613 is about 15985.4813189969. The cubic root of 255535613 is about 634.5762465133.

The spelling of 255535613 in words is "two hundred fifty-five million, five hundred thirty-five thousand, six hundred thirteen".