258343853 has 4 divisors (see below), whose sum is σ = 259349340. Its totient is φ = 257338368.

The previous prime is 258343807. The next prime is 258343873. The reversal of 258343853 is 358343852.

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 255904009 + 2439844 = 15997^2 + 1562^2 .

It is a cyclic number.

It is not a de Polignac number, because 258343853 - 2²² = 254149549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 258343853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258343873) 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, 502358 + ... + 502871.

It is an arithmetic number, because the mean of its divisors is an integer number (64837335).

Almost surely, 2^258343853 is an apocalyptic number.

It is an amenable number.

258343853 is a deficient number, since it is larger than the sum of its proper divisors (1005487).

258343853 is a wasteful number, since it uses less digits than its factorization.

258343853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005486.

The product of its digits is 345600, while the sum is 41.

The square root of 258343853 is about 16073.0785165755. The cubic root of 258343853 is about 636.8923672193.

Subtracting 258343853 from its reverse (358343852), we obtain a palindrome (99999999).

The spelling of 258343853 in words is "two hundred fifty-eight million, three hundred forty-three thousand, eight hundred fifty-three".