258721271 has 16 divisors (see below), whose sum is σ = 278903040. Its totient is φ = 239267520.

The previous prime is 258721259. The next prime is 258721277. The reversal of 258721271 is 172127852.

It is a cyclic number.

It is not a de Polignac number, because 258721271 - 2¹⁰ = 258720247 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258721277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141956 + ... + 143766.

It is an arithmetic number, because the mean of its divisors is an integer number (17431440).

Almost surely, 2^258721271 is an apocalyptic number.

258721271 is a deficient number, since it is larger than the sum of its proper divisors (20181769).

258721271 is a wasteful number, since it uses less digits than its factorization.

258721271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006.

The product of its digits is 15680, while the sum is 35.

The square root of 258721271 is about 16084.8149196688. The cubic root of 258721271 is about 637.2023645092.

The spelling of 258721271 in words is "two hundred fifty-eight million, seven hundred twenty-one thousand, two hundred seventy-one".