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250213145 = 5713796961
BaseRepresentation
bin11101110100111…
…11001100011001
3122102211010220112
432322133030121
51003023310040
640454534105
76125530250
oct1672371431
9572733815
10250213145
11119269926
126b967335
133cab8720
1425333797
1516e77365
hexee9f319

250213145 has 32 divisors (see below), whose sum is σ = 374277120. Its totient is φ = 156349440.

The previous prime is 250213141. The next prime is 250213151. The reversal of 250213145 is 541312052.

It is not a de Polignac number, because 250213145 - 22 = 250213141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 250213145.

It is not an unprimeable number, because it can be changed into a prime (250213141) 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 31 ways as a sum of consecutive naturals, for example, 32465 + ... + 39425.

It is an arithmetic number, because the mean of its divisors is an integer number (11696160).

Almost surely, 2250213145 is an apocalyptic number.

It is an amenable number.

250213145 is a deficient number, since it is larger than the sum of its proper divisors (124063975).

250213145 is a wasteful number, since it uses less digits than its factorization.

250213145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7065.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 250213145 is about 15818.1271015250. The cubic root of 250213145 is about 630.1395046737.

Adding to 250213145 its reverse (541312052), we get a palindrome (791525197).

The spelling of 250213145 in words is "two hundred fifty million, two hundred thirteen thousand, one hundred forty-five".

Divisors: 1 5 7 13 35 65 79 91 395 455 553 1027 2765 5135 6961 7189 34805 35945 48727 90493 243635 452465 549919 633451 2749595 3167255 3849433 7148947 19247165 35744735 50042629 250213145