258343851 has 4 divisors (see below), whose sum is σ = 344458472. Its totient is φ = 172229232.

The previous prime is 258343807. The next prime is 258343873. The reversal of 258343851 is 158343852.

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

It is not a de Polignac number, because 258343851 - 2¹⁰ = 258342827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258343051) 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, 43057306 + ... + 43057311.

It is an arithmetic number, because the mean of its divisors is an integer number (86114618).

Almost surely, 2^258343851 is an apocalyptic number.

258343851 is a deficient number, since it is larger than the sum of its proper divisors (86114621).

258343851 is an equidigital number, since it uses as much as digits as its factorization.

258343851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86114620.

The product of its digits is 115200, while the sum is 39.

The square root of 258343851 is about 16073.0784543596. The cubic root of 258343851 is about 636.8923655758.

Subtracting from 258343851 its reverse (158343852), we obtain a palindrome (99999999).

The spelling of 258343851 in words is "two hundred fifty-eight million, three hundred forty-three thousand, eight hundred fifty-one".