258356243 has 4 divisors (see below), whose sum is σ = 271953960. Its totient is φ = 244758528.

The previous prime is 258356233. The next prime is 258356261. The reversal of 258356243 is 342653852.

It is a happy number.

258356243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 258356243 - 2¹⁰ = 258355219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 258356197 and 258356206.

It is not an unprimeable number, because it can be changed into a prime (258356233) 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, 6798830 + ... + 6798867.

It is an arithmetic number, because the mean of its divisors is an integer number (67988490).

Almost surely, 2^258356243 is an apocalyptic number.

258356243 is a deficient number, since it is larger than the sum of its proper divisors (13597717).

258356243 is a wasteful number, since it uses less digits than its factorization.

258356243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13597716.

The product of its digits is 172800, while the sum is 38.

The square root of 258356243 is about 16073.4639390518. The cubic root of 258356243 is about 636.9025487019.

The spelling of 258356243 in words is "two hundred fifty-eight million, three hundred fifty-six thousand, two hundred forty-three".