258461 has 4 divisors (see below), whose sum is σ = 295392. Its totient is φ = 221532.

The previous prime is 258449. The next prime is 258469. The reversal of 258461 is 164852.

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 258461 - 2¹⁰ = 257437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 258461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258469) 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, 18455 + ... + 18468.

It is an arithmetic number, because the mean of its divisors is an integer number (73848).

2²⁵⁸⁴⁶¹ is an apocalyptic number.

It is an amenable number.

258461 is a deficient number, since it is larger than the sum of its proper divisors (36931).

258461 is an equidigital number, since it uses as much as digits as its factorization.

258461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36930.

The product of its digits is 1920, while the sum is 26.

The square root of 258461 is about 508.3905978674. The cubic root of 258461 is about 63.6988619759.

The spelling of 258461 in words is "two hundred fifty-eight thousand, four hundred sixty-one".