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53786109 = 3132106087
BaseRepresentation
bin1100110100101…
…1010111111101
310202012121200010
43031023113331
5102232123414
65200453433
71222113546
oct315132775
9122177603
1053786109
11283a7333
121601a279
13b1b2800
1472014cd
154ac6959
hex334b5fd

53786109 has 12 divisors (see below), whose sum is σ = 77656416. Its totient is φ = 33098832.

The previous prime is 53786107. The next prime is 53786119. The reversal of 53786109 is 90168735.

It is not a de Polignac number, because 53786109 - 21 = 53786107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53786107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52537 + ... + 53550.

It is an arithmetic number, because the mean of its divisors is an integer number (6471368).

Almost surely, 253786109 is an apocalyptic number.

It is an amenable number.

53786109 is a deficient number, since it is larger than the sum of its proper divisors (23870307).

53786109 is a wasteful number, since it uses less digits than its factorization.

53786109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106116 (or 106103 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 53786109 is about 7333.9013492138. The cubic root of 53786109 is about 377.4766068863.

The spelling of 53786109 in words is "fifty-three million, seven hundred eighty-six thousand, one hundred nine".

Divisors: 1 3 13 39 169 507 106087 318261 1379131 4137393 17928703 53786109