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13125253 = 101129953
BaseRepresentation
bin110010000100…
…011010000101
3220200211110111
4302010122011
511330002003
61145153021
7216364021
oct62043205
926624414
1013125253
117455219
12448b771
13294722b
141a59381
151243e6d
hexc84685

13125253 has 4 divisors (see below), whose sum is σ = 13255308. Its totient is φ = 12995200.

The previous prime is 13125251. The next prime is 13125271. The reversal of 13125253 is 35252131.

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 10510564 + 2614689 = 3242^2 + 1617^2 .

It is a cyclic number.

It is not a de Polignac number, because 13125253 - 21 = 13125251 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 (13125251) 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, 64876 + ... + 65077.

It is an arithmetic number, because the mean of its divisors is an integer number (3313827).

Almost surely, 213125253 is an apocalyptic number.

It is an amenable number.

13125253 is a deficient number, since it is larger than the sum of its proper divisors (130055).

13125253 is a wasteful number, since it uses less digits than its factorization.

13125253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130054.

The product of its digits is 900, while the sum is 22.

The square root of 13125253 is about 3622.8791036964. The cubic root of 13125253 is about 235.8862146589.

Adding to 13125253 its reverse (35252131), we get a palindrome (48377384).

The spelling of 13125253 in words is "thirteen million, one hundred twenty-five thousand, two hundred fifty-three".

Divisors: 1 101 129953 13125253