258515 has 8 divisors (see below), whose sum is σ = 313200. Its totient is φ = 204832.

The previous prime is 258499. The next prime is 258521. The reversal of 258515 is 515852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 258515 - 2⁴ = 258499 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258515.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572 + ... + 918.

It is an arithmetic number, because the mean of its divisors is an integer number (39150).

2²⁵⁸⁵¹⁵ is an apocalyptic number.

258515 is a deficient number, since it is larger than the sum of its proper divisors (54685).

258515 is a wasteful number, since it uses less digits than its factorization.

258515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501.

The product of its digits is 2000, while the sum is 26.

The square root of 258515 is about 508.4437038650. The cubic root of 258515 is about 63.7032978469.

It can be divided in two parts, 258 and 515, that multiplied together give a triangular number (132870 = T₅₁₅).

The spelling of 258515 in words is "two hundred fifty-eight thousand, five hundred fifteen".