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12538201 = 131496473
BaseRepresentation
bin101111110101…
…000101011001
3212121000011211
4233311011121
511202210301
61124423121
7211400344
oct57650531
925530154
1012538201
117094155
124247aa1
13279cc70
14194545b
15117a051
hexbf5159

12538201 has 8 divisors (see below), whose sum is σ = 13595400. Its totient is φ = 11494272.

The previous prime is 12538199. The next prime is 12538223. The reversal of 12538201 is 10283521.

It can be written as a sum of positive squares in 4 ways, for example, as 455625 + 12082576 = 675^2 + 3476^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12538201 - 21 = 12538199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12533201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1300 + ... + 5173.

It is an arithmetic number, because the mean of its divisors is an integer number (1699425).

Almost surely, 212538201 is an apocalyptic number.

It is an amenable number.

12538201 is a deficient number, since it is larger than the sum of its proper divisors (1057199).

12538201 is a wasteful number, since it uses less digits than its factorization.

12538201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6635.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 12538201 is about 3540.9322218873. The cubic root of 12538201 is about 232.3156190315.

Adding to 12538201 its product of nonzero digits (480), we get a square (12538681 = 35412).

The spelling of 12538201 in words is "twelve million, five hundred thirty-eight thousand, two hundred one".

Divisors: 1 13 149 1937 6473 84149 964477 12538201