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53638485 = 3517210347
BaseRepresentation
bin1100110010011…
…1010101010101
310201221010011120
43030213111111
5102212412420
65153354153
71220630265
oct314472525
9121833146
1053638485
112830642a
1215b68959
13b160564
1471a37a5
154a97d40
hex3327555

53638485 has 16 divisors (see below), whose sum is σ = 90870336. Its totient is φ = 26924288.

The previous prime is 53638483. The next prime is 53638499. The reversal of 53638485 is 58483635.

It is a cyclic number.

It is not a de Polignac number, because 53638485 - 21 = 53638483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53638483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104919 + ... + 105428.

It is an arithmetic number, because the mean of its divisors is an integer number (5679396).

Almost surely, 253638485 is an apocalyptic number.

It is an amenable number.

53638485 is a deficient number, since it is larger than the sum of its proper divisors (37231851).

53638485 is a wasteful number, since it uses less digits than its factorization.

53638485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210372.

The product of its digits is 345600, while the sum is 42.

The square root of 53638485 is about 7323.8299406799. The cubic root of 53638485 is about 377.1309434983.

The spelling of 53638485 in words is "fifty-three million, six hundred thirty-eight thousand, four hundred eighty-five".

Divisors: 1 3 5 15 17 51 85 255 210347 631041 1051735 3155205 3575899 10727697 17879495 53638485