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12553201 = 29432869
BaseRepresentation
bin101111111000…
…101111110001
3212121202202101
4233320233301
511203200301
61125020401
7211462153
oct57705761
925552671
1012553201
1170a4451
124254701
1327a6a3b
14194aad3
15117e701
hexbf8bf1

12553201 has 4 divisors (see below), whose sum is σ = 12986100. Its totient is φ = 12120304.

The previous prime is 12553199. The next prime is 12553207. The reversal of 12553201 is 10235521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10235521 = 29352949.

It can be written as a sum of positive squares in 2 ways, for example, as 9928801 + 2624400 = 3151^2 + 1620^2 .

It is a cyclic number.

It is not a de Polignac number, because 12553201 - 21 = 12553199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12553207) 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, 216406 + ... + 216463.

It is an arithmetic number, because the mean of its divisors is an integer number (3246525).

Almost surely, 212553201 is an apocalyptic number.

12553201 is the 1585-th centered decagonal number.

It is an amenable number.

12553201 is a deficient number, since it is larger than the sum of its proper divisors (432899).

12553201 is an equidigital number, since it uses as much as digits as its factorization.

12553201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432898.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 12553201 is about 3543.0496750681. The cubic root of 12553201 is about 232.4082252345.

Adding to 12553201 its reverse (10235521), we get a palindrome (22788722).

The spelling of 12553201 in words is "twelve million, five hundred fifty-three thousand, two hundred one".

Divisors: 1 29 432869 12553201