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53205656 = 2378311447
BaseRepresentation
bin1100101011110…
…1101010011000
310201010010102212
43022331222120
5102110040111
65140214252
71214145350
oct312755230
9121103385
1053205656
1128040219
121599a388
13b03b54a
1470cdb60
154a0e98b
hex32bda98

53205656 has 32 divisors (see below), whose sum is σ = 115395840. Its totient is φ = 22525728.

The previous prime is 53205653. The next prime is 53205679. The reversal of 53205656 is 65650235.

53205656 is a modest number, since divided by 5656 gives 5320 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53205653) 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, 1076 + ... + 10371.

It is an arithmetic number, because the mean of its divisors is an integer number (3606120).

Almost surely, 253205656 is an apocalyptic number.

53205656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

53205656 is an abundant number, since it is smaller than the sum of its proper divisors (62190184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53205656 is a wasteful number, since it uses less digits than its factorization.

53205656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11543 (or 11539 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 53205656 is about 7294.2207260269. The cubic root of 53205656 is about 376.1137991141.

The spelling of 53205656 in words is "fifty-three million, two hundred five thousand, six hundred fifty-six".

Divisors: 1 2 4 7 8 14 28 56 83 166 332 581 664 1162 2324 4648 11447 22894 45788 80129 91576 160258 320516 641032 950101 1900202 3800404 6650707 7600808 13301414 26602828 53205656