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3030530081 = 61409121469
BaseRepresentation
bin1011010010100010…
…0011100000100001
321211012110212201212
42310220203200201
522201303430311
61220414435505
7135046036445
oct26450434041
97735425655
103030530081
111315723117
12706b02b95
13393b13887
1420a6b2825
1512b0c4c8b
hexb4a23821

3030530081 has 8 divisors (see below), whose sum is σ = 3087767400. Its totient is φ = 2973536640.

The previous prime is 3030530051. The next prime is 3030530099. The reversal of 3030530081 is 1800350303.

It can be written as a sum of positive squares in 4 ways, for example, as 648211600 + 2382318481 = 25460^2 + 48809^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3030530081 - 26 = 3030530017 is a prime.

It is a super-2 number, since 2×30305300812 = 18368225143691733122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3030530021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35786 + ... + 85683.

It is an arithmetic number, because the mean of its divisors is an integer number (385970925).

Almost surely, 23030530081 is an apocalyptic number.

It is an amenable number.

3030530081 is a deficient number, since it is larger than the sum of its proper divisors (57237319).

3030530081 is a wasteful number, since it uses less digits than its factorization.

3030530081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121939.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 3030530081 is about 55050.2505080585. The cubic root of 3030530081 is about 1447.1255112276.

Adding to 3030530081 its reverse (1800350303), we get a palindrome (4830880384).

The spelling of 3030530081 in words is "three billion, thirty million, five hundred thirty thousand, eighty-one".

Divisors: 1 61 409 24949 121469 7409609 49680821 3030530081