258015 has 16 divisors (see below), whose sum is σ = 419328. Its totient is φ = 135456.

The previous prime is 257993. The next prime is 258019. The reversal of 258015 is 510852.

258015 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 258015 - 2⁹ = 257503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 257982 and 258000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1462 + ... + 1628.

It is an arithmetic number, because the mean of its divisors is an integer number (26208).

2²⁵⁸⁰¹⁵ is an apocalyptic number.

258015 is a deficient number, since it is larger than the sum of its proper divisors (161313).

258015 is a wasteful number, since it uses less digits than its factorization.

258015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 258015 is about 507.9517693640. The cubic root of 258015 is about 63.6622013199.

Adding to 258015 its reverse (510852), we get a palindrome (768867).

The spelling of 258015 in words is "two hundred fifty-eight thousand, fifteen".