258118247 has 4 divisors (see below), whose sum is σ = 264413856. Its totient is φ = 251822640.

The previous prime is 258118193. The next prime is 258118277. The reversal of 258118247 is 742811852.

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 258118247 - 2⁸ = 258117991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 258118247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258118277) 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, 3147743 + ... + 3147824.

It is an arithmetic number, because the mean of its divisors is an integer number (66103464).

Almost surely, 2^258118247 is an apocalyptic number.

258118247 is a deficient number, since it is larger than the sum of its proper divisors (6295609).

258118247 is an equidigital number, since it uses as much as digits as its factorization.

258118247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6295608.

The product of its digits is 35840, while the sum is 38.

The square root of 258118247 is about 16066.0588508819. The cubic root of 258118247 is about 636.7069185312.

The spelling of 258118247 in words is "two hundred fifty-eight million, one hundred eighteen thousand, two hundred forty-seven".