258797056 has 80 divisors (see below), whose sum is σ = 595926144. Its totient is φ = 109983744.

The previous prime is 258797051. The next prime is 258797089. The reversal of 258797056 is 650797852.

258797056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258797051) 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, 583971 + ... + 584413.

Almost surely, 2^258797056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258797056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297963072).

258797056 is an abundant number, since it is smaller than the sum of its proper divisors (337129088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258797056 is an equidigital number, since it uses as much as digits as its factorization.

258797056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 49.

The square root of 258797056 is about 16087.1705405270. The cubic root of 258797056 is about 637.2645751741.

The spelling of 258797056 in words is "two hundred fifty-eight million, seven hundred ninety-seven thousand, fifty-six".