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30130551 = 3211304349
BaseRepresentation
bin111001011110…
…0000101110111
32002200210100100
41302330011313
530203134201
62553445143
7514051113
oct162740567
962623310
1030130551
111600a590
12a1107b3
13631c539
144004743
1529a2886
hex1cbc177

30130551 has 12 divisors (see below), whose sum is σ = 47478600. Its totient is φ = 18260880.

The previous prime is 30130517. The next prime is 30130571. The reversal of 30130551 is 15503103.

It is a happy number.

It is not a de Polignac number, because 30130551 - 211 = 30128503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30130501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152076 + ... + 152273.

It is an arithmetic number, because the mean of its divisors is an integer number (3956550).

Almost surely, 230130551 is an apocalyptic number.

30130551 is a deficient number, since it is larger than the sum of its proper divisors (17348049).

30130551 is a wasteful number, since it uses less digits than its factorization.

30130551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304366 (or 304363 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 30130551 is about 5489.1302589755. The cubic root of 30130551 is about 311.1733231550.

Adding to 30130551 its reverse (15503103), we get a palindrome (45633654).

The spelling of 30130551 in words is "thirty million, one hundred thirty thousand, five hundred fifty-one".

Divisors: 1 3 9 11 33 99 304349 913047 2739141 3347839 10043517 30130551