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52508560 = 24513291741
BaseRepresentation
bin1100100001001…
…1011110010000
310122210201012111
43020103132100
5101420233220
65113235104
71205213116
oct310233620
9118721174
1052508560
1127704505
1215702a94
13ab56170
146d8bab6
15492315a
hex3213790

52508560 has 80 divisors (see below), whose sum is σ = 136085040. Its totient is φ = 18708480.

The previous prime is 52508557. The next prime is 52508569. The reversal of 52508560 is 6580525.

It can be written as a sum of positive squares in 8 ways, for example, as 18215824 + 34292736 = 4268^2 + 5856^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52508569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29290 + ... + 31030.

It is an arithmetic number, because the mean of its divisors is an integer number (1701063).

Almost surely, 252508560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52508560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68042520).

52508560 is an abundant number, since it is smaller than the sum of its proper divisors (83576480).

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

52508560 is a wasteful number, since it uses less digits than its factorization.

52508560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796 (or 1790 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 52508560 is about 7246.2790451376. The cubic root of 52508560 is about 374.4639689685.

The spelling of 52508560 in words is "fifty-two million, five hundred eight thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 13 16 20 26 29 40 52 58 65 80 104 116 130 145 208 232 260 290 377 464 520 580 754 1040 1160 1508 1741 1885 2320 3016 3482 3770 6032 6964 7540 8705 13928 15080 17410 22633 27856 30160 34820 45266 50489 69640 90532 100978 113165 139280 181064 201956 226330 252445 362128 403912 452660 504890 656357 807824 905320 1009780 1312714 1810640 2019560 2625428 3281785 4039120 5250856 6563570 10501712 13127140 26254280 52508560