258061117 has 2 divisors, whose sum is σ = 258061118. Its totient is φ = 258061116.

The previous prime is 258061109. The next prime is 258061183. The reversal of 258061117 is 711160852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177582276 + 80478841 = 13326^2 + 8971^2 .

It is a cyclic number.

It is not a de Polignac number, because 258061117 - 2³ = 258061109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258061217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129030558 + 129030559.

It is an arithmetic number, because the mean of its divisors is an integer number (129030559).

Almost surely, 2^258061117 is an apocalyptic number.

It is an amenable number.

258061117 is a deficient number, since it is larger than the sum of its proper divisors (1).

258061117 is an equidigital number, since it uses as much as digits as its factorization.

258061117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 258061117 is about 16064.2807806637. The cubic root of 258061117 is about 636.6599403850.

The spelling of 258061117 in words is "two hundred fifty-eight million, sixty-one thousand, one hundred seventeen".