258082791 has 4 divisors (see below), whose sum is σ = 344110392. Its totient is φ = 172055192.

The previous prime is 258082787. The next prime is 258082817. The reversal of 258082791 is 197280852.

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 258082791 - 2² = 258082787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258082711) 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, 43013796 + ... + 43013801.

It is an arithmetic number, because the mean of its divisors is an integer number (86027598).

Almost surely, 2^258082791 is an apocalyptic number.

258082791 is a deficient number, since it is larger than the sum of its proper divisors (86027601).

258082791 is an equidigital number, since it uses as much as digits as its factorization.

258082791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86027600.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 258082791 is about 16064.9553687522. The cubic root of 258082791 is about 636.6777637872.

The spelling of 258082791 in words is "two hundred fifty-eight million, eighty-two thousand, seven hundred ninety-one".