258541 has 4 divisors (see below), whose sum is σ = 259900. Its totient is φ = 257184.

The previous prime is 258539. The next prime is 258551. The reversal of 258541 is 145852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 133225 + 125316 = 365^2 + 354^2 .

It is a cyclic number.

It is not a de Polignac number, because 258541 - 2¹ = 258539 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336 + ... + 793.

It is an arithmetic number, because the mean of its divisors is an integer number (64975).

2²⁵⁸⁵⁴¹ is an apocalyptic number.

It is an amenable number.

258541 is a deficient number, since it is larger than the sum of its proper divisors (1359).

258541 is a wasteful number, since it uses less digits than its factorization.

258541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358.

The product of its digits is 1600, while the sum is 25.

The square root of 258541 is about 508.4692714413. The cubic root of 258541 is about 63.7054334164.

The spelling of 258541 in words is "two hundred fifty-eight thousand, five hundred forty-one".