258540231 has 8 divisors (see below), whose sum is σ = 349442800. Its totient is φ = 169998912.

The previous prime is 258540223. The next prime is 258540253. The reversal of 258540231 is 132045852.

258540231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 258540231 - 2³ = 258540223 is a prime.

It is a super-2 number, since 2×258540231² = 133686102091066722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258540281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 590056 + ... + 590493.

It is an arithmetic number, because the mean of its divisors is an integer number (43680350).

Almost surely, 2^258540231 is an apocalyptic number.

258540231 is a deficient number, since it is larger than the sum of its proper divisors (90902569).

258540231 is a wasteful number, since it uses less digits than its factorization.

258540231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180625.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 258540231 is about 16079.1862667238. The cubic root of 258540231 is about 637.0537025488.

The spelling of 258540231 in words is "two hundred fifty-eight million, five hundred forty thousand, two hundred thirty-one".