258489161 has 12 divisors (see below), whose sum is σ = 302439492. Its totient is φ = 220274208.

The previous prime is 258489139. The next prime is 258489169. The reversal of 258489161 is 161984852.

It can be written as a sum of positive squares in 2 ways, for example, as 122323600 + 136165561 = 11060^2 + 11669^2 .

It is a de Polignac number, because none of the positive numbers 2^k-258489161 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258489169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6770 + ... + 23723.

It is an arithmetic number, because the mean of its divisors is an integer number (25203291).

Almost surely, 2^258489161 is an apocalyptic number.

It is an amenable number.

258489161 is a deficient number, since it is larger than the sum of its proper divisors (43950331).

258489161 is a wasteful number, since it uses less digits than its factorization.

258489161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30680 (or 30673 counting only the distinct ones).

The product of its digits is 138240, while the sum is 44.

The square root of 258489161 is about 16077.5981104144. The cubic root of 258489161 is about 637.0117535971.

The spelling of 258489161 in words is "two hundred fifty-eight million, four hundred eighty-nine thousand, one hundred sixty-one".