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258107145 = 3517207143
BaseRepresentation
bin11110110001001…
…10011100001001
3122222200012102220
433120212130021
51012033412040
641340044253
76252605652
oct1730463411
9588605386
10258107145
1112277079a
1272533689
134162082a
14263ca529
15179d62d0
hexf626709

258107145 has 8 divisors (see below), whose sum is σ = 412971456. Its totient is φ = 137657136.

The previous prime is 258107131. The next prime is 258107159. The reversal of 258107145 is 541701852.

258107145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (258107131) and next prime (258107159).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 258107145 - 211 = 258105097 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8603557 + ... + 8603586.

It is an arithmetic number, because the mean of its divisors is an integer number (51621432).

Almost surely, 2258107145 is an apocalyptic number.

It is an amenable number.

258107145 is a deficient number, since it is larger than the sum of its proper divisors (154864311).

258107145 is a wasteful number, since it uses less digits than its factorization.

258107145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17207151.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 258107145 is about 16065.7133361703. The cubic root of 258107145 is about 636.6977898707.

Adding to 258107145 its reverse (541701852), we get a palindrome (799808997).

The spelling of 258107145 in words is "two hundred fifty-eight million, one hundred seven thousand, one hundred forty-five".

Divisors: 1 3 5 15 17207143 51621429 86035715 258107145