258517312 has 14 divisors (see below), whose sum is σ = 512995418. Its totient is φ = 129258624.

The previous prime is 258517279. The next prime is 258517313. The reversal of 258517312 is 213715852.

It can be written as a sum of positive squares in only one way, i.e., 256512256 + 2005056 = 16016^2 + 1416^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258517313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2019603 + ... + 2019730.

Almost surely, 2^258517312 is an apocalyptic number.

It is an amenable number.

258517312 is a deficient number, since it is larger than the sum of its proper divisors (254478106).

258517312 is an equidigital number, since it uses as much as digits as its factorization.

258517312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4039345 (or 4039335 counting only the distinct ones).

The product of its digits is 16800, while the sum is 34.

The square root of 258517312 is about 16078.4735593899. The cubic root of 258517312 is about 637.0348775414.

The spelling of 258517312 in words is "two hundred fifty-eight million, five hundred seventeen thousand, three hundred twelve".