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30130053 = 310043351
BaseRepresentation
bin111001011101…
…1111110000101
32002200202122220
41302323332011
530203130203
62553442553
7514046502
oct162737605
962622586
1030130053
111600a178
12a110459
13631c245
1440044a9
1529a2653
hex1cbbf85

30130053 has 4 divisors (see below), whose sum is σ = 40173408. Its totient is φ = 20086700.

The previous prime is 30130049. The next prime is 30130063. The reversal of 30130053 is 35003103.

30130053 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30130053 - 22 = 30130049 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30130003) 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, 5021673 + ... + 5021678.

It is an arithmetic number, because the mean of its divisors is an integer number (10043352).

Almost surely, 230130053 is an apocalyptic number.

It is an amenable number.

30130053 is a deficient number, since it is larger than the sum of its proper divisors (10043355).

30130053 is a wasteful number, since it uses less digits than its factorization.

30130053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10043354.

The product of its (nonzero) digits is 135, while the sum is 15.

The square root of 30130053 is about 5489.0848964103. The cubic root of 30130053 is about 311.1716087802.

Adding to 30130053 its reverse (35003103), we get a palindrome (65133156).

The spelling of 30130053 in words is "thirty million, one hundred thirty thousand, fifty-three".

Divisors: 1 3 10043351 30130053