258081 has 4 divisors (see below), whose sum is σ = 344112. Its totient is φ = 172052.

The previous prime is 258067. The next prime is 258101. The reversal of 258081 is 180852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 258081 - 2⁷ = 257953 is a prime.

It is a super-2 number, since 2×258081² = 133211605122, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (258031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43011 + ... + 43016.

It is an arithmetic number, because the mean of its divisors is an integer number (86028).

2²⁵⁸⁰⁸¹ is an apocalyptic number.

It is an amenable number.

258081 is a deficient number, since it is larger than the sum of its proper divisors (86031).

258081 is an equidigital number, since it uses as much as digits as its factorization.

258081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86030.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 258081 is about 508.0167320079. The cubic root of 258081 is about 63.6676291014.

The spelling of 258081 in words is "two hundred fifty-eight thousand, eighty-one".