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12530153 = 47266599
BaseRepresentation
bin101111110011…
…000111101001
3212120121010202
4233303013221
511201431103
61124321545
7211335026
oct57630751
925517122
1012530153
1170890a9
1242432b5
1327993bc
14194254d
151177988
hexbf31e9

12530153 has 4 divisors (see below), whose sum is σ = 12796800. Its totient is φ = 12263508.

The previous prime is 12530149. The next prime is 12530159. The reversal of 12530153 is 35103521.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35103521 = 172064913.

It is a cyclic number.

It is not a de Polignac number, because 12530153 - 22 = 12530149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12530159) 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, 133253 + ... + 133346.

It is an arithmetic number, because the mean of its divisors is an integer number (3199200).

Almost surely, 212530153 is an apocalyptic number.

It is an amenable number.

12530153 is a deficient number, since it is larger than the sum of its proper divisors (266647).

12530153 is an equidigital number, since it uses as much as digits as its factorization.

12530153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266646.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 12530153 is about 3539.7956155688. The cubic root of 12530153 is about 232.2659022691.

Adding to 12530153 its reverse (35103521), we get a palindrome (47633674).

The spelling of 12530153 in words is "twelve million, five hundred thirty thousand, one hundred fifty-three".

Divisors: 1 47 266599 12530153