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12533141 = 19659639
BaseRepresentation
bin101111110011…
…110110010101
3212120202020102
4233303312111
511202030031
61124343445
7211346525
oct57636625
925522212
1012533141
117090375
124244b85
13279a87a
141943685
1511787cb
hexbf3d95

12533141 has 4 divisors (see below), whose sum is σ = 13192800. Its totient is φ = 11873484.

The previous prime is 12533123. The next prime is 12533149. The reversal of 12533141 is 14133521.

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 12533141 - 26 = 12533077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12533149) 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, 329801 + ... + 329838.

It is an arithmetic number, because the mean of its divisors is an integer number (3298200).

Almost surely, 212533141 is an apocalyptic number.

It is an amenable number.

12533141 is a deficient number, since it is larger than the sum of its proper divisors (659659).

12533141 is an equidigital number, since it uses as much as digits as its factorization.

12533141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659658.

The product of its digits is 360, while the sum is 20.

The square root of 12533141 is about 3540.2176486764. The cubic root of 12533141 is about 232.2843632131.

Adding to 12533141 its reverse (14133521), we get a palindrome (26666662).

The spelling of 12533141 in words is "twelve million, five hundred thirty-three thousand, one hundred forty-one".

Divisors: 1 19 659639 12533141