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12518053 = 29431657
BaseRepresentation
bin101111110000…
…001010100101
3212112222112121
4233300022211
511201034203
61124145541
7211254532
oct57601245
925488477
1012518053
11707aaa9
1242382b1
132793a42
14193bd89
1511740bd
hexbf02a5

12518053 has 4 divisors (see below), whose sum is σ = 12949740. Its totient is φ = 12086368.

The previous prime is 12518047. The next prime is 12518057. The reversal of 12518053 is 35081521.

It is a happy number.

12518053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5373124 + 7144929 = 2318^2 + 2673^2 .

It is a cyclic number.

It is not a de Polignac number, because 12518053 - 25 = 12518021 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 (12518057) 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, 215800 + ... + 215857.

It is an arithmetic number, because the mean of its divisors is an integer number (3237435).

Almost surely, 212518053 is an apocalyptic number.

It is an amenable number.

12518053 is a deficient number, since it is larger than the sum of its proper divisors (431687).

12518053 is an equidigital number, since it uses as much as digits as its factorization.

12518053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431686.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 12518053 is about 3538.0860645270. The cubic root of 12518053 is about 232.1911140749.

Adding to 12518053 its reverse (35081521), we get a palindrome (47599574).

The spelling of 12518053 in words is "twelve million, five hundred eighteen thousand, fifty-three".

Divisors: 1 29 431657 12518053