258550561 has 8 divisors (see below), whose sum is σ = 268740864. Its totient is φ = 248528880.

The previous prime is 258550549. The next prime is 258550601. The reversal of 258550561 is 165055852.

258550561 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258550561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

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 258550561.

It is not an unprimeable number, because it can be changed into a prime (258550361) 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, 39025 + ... + 45166.

It is an arithmetic number, because the mean of its divisors is an integer number (33592608).

Almost surely, 2^258550561 is an apocalyptic number.

It is an amenable number.

258550561 is a deficient number, since it is larger than the sum of its proper divisors (10190303).

258550561 is an equidigital number, since it uses as much as digits as its factorization.

258550561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84311.

The product of its (nonzero) digits is 60000, while the sum is 37.

The square root of 258550561 is about 16079.5074862385. The cubic root of 258550561 is about 637.0621869500.

The spelling of 258550561 in words is "two hundred fifty-eight million, five hundred fifty thousand, five hundred sixty-one".