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13210525 = 524711243
BaseRepresentation
bin110010011001…
…001110011101
3220212011102201
4302121032131
511340214100
61151051501
7220200436
oct62311635
926764381
1013210525
117503299
124510b91
132976ca3
141a7c48d
15125e36a
hexc9939d

13210525 has 12 divisors (see below), whose sum is σ = 16731072. Its totient is φ = 10342640.

The previous prime is 13210523. The next prime is 13210531. The reversal of 13210525 is 52501231.

It is not a de Polignac number, because 13210525 - 21 = 13210523 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 (13210523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4447 + ... + 6796.

It is an arithmetic number, because the mean of its divisors is an integer number (1394256).

Almost surely, 213210525 is an apocalyptic number.

It is an amenable number.

13210525 is a deficient number, since it is larger than the sum of its proper divisors (3520547).

13210525 is a wasteful number, since it uses less digits than its factorization.

13210525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11300 (or 11295 counting only the distinct ones).

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

The square root of 13210525 is about 3634.6285917546. The cubic root of 13210525 is about 236.3959466992.

Adding to 13210525 its reverse (52501231), we get a palindrome (65711756).

The spelling of 13210525 in words is "thirteen million, two hundred ten thousand, five hundred twenty-five".

Divisors: 1 5 25 47 235 1175 11243 56215 281075 528421 2642105 13210525