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258133 = 293881
BaseRepresentation
bin111111000001010101
3111010002111
4333001111
531230013
65311021
72123401
oct770125
9433074
10258133
11166a37
12105471
1390655
146a101
155173d
hex3f055

258133 has 4 divisors (see below), whose sum is σ = 259308. Its totient is φ = 256960.

The previous prime is 258131. The next prime is 258143. The reversal of 258133 is 331852.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 154449 + 103684 = 393^2 + 322^2 .

It is a cyclic number.

It is not a de Polignac number, because 258133 - 21 = 258131 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258133.

It is not an unprimeable number, because it can be changed into a prime (258131) 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, 148 + ... + 733.

It is an arithmetic number, because the mean of its divisors is an integer number (64827).

2258133 is an apocalyptic number.

It is an amenable number.

258133 is a deficient number, since it is larger than the sum of its proper divisors (1175).

258133 is an equidigital number, since it uses as much as digits as its factorization.

258133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174.

The product of its digits is 720, while the sum is 22.

The square root of 258133 is about 508.0679088468. The cubic root of 258133 is about 63.6719048835.

Adding to 258133 its reverse (331852), we get a palindrome (589985).

The spelling of 258133 in words is "two hundred fifty-eight thousand, one hundred thirty-three".

Divisors: 1 293 881 258133