Search a number
-
+
254230321 = 433587137
BaseRepresentation
bin11110010011100…
…11111100110001
3122201101020102211
433021303330301
51010040332241
641121012121
76204631162
oct1711637461
9581336384
10254230321
11120563004
1271184041
1340894057
1425a9b769
15174bc781
hexf273f31

254230321 has 4 divisors (see below), whose sum is σ = 254817892. Its totient is φ = 253642752.

The previous prime is 254230303. The next prime is 254230331. The reversal of 254230321 is 123032452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91412721 + 162817600 = 9561^2 + 12760^2 .

It is a cyclic number.

It is not a de Polignac number, because 254230321 - 25 = 254230289 is a prime.

It is a super-2 number, since 2×2542303212 = 129266112231526082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 254230292 and 254230301.

It is not an unprimeable number, because it can be changed into a prime (254230331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293136 + ... + 294001.

It is an arithmetic number, because the mean of its divisors is an integer number (63704473).

Almost surely, 2254230321 is an apocalyptic number.

It is an amenable number.

254230321 is a deficient number, since it is larger than the sum of its proper divisors (587571).

254230321 is an equidigital number, since it uses as much as digits as its factorization.

254230321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587570.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 254230321 is about 15944.6016256287. The cubic root of 254230321 is about 633.4939164056.

Adding to 254230321 its reverse (123032452), we get a palindrome (377262773).

The spelling of 254230321 in words is "two hundred fifty-four million, two hundred thirty thousand, three hundred twenty-one".

Divisors: 1 433 587137 254230321