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51050580 = 22357197617
BaseRepresentation
bin1100001010111…
…1100001010100
310120001122020020
43002233201110
5101032104310
65022105140
71156631340
oct302574124
9116048206
1051050580
11268a9069
121511b1b0
13a765659
146acc620
154736170
hex30af854

51050580 has 96 divisors (see below), whose sum is σ = 164457216. Its totient is φ = 11590656.

The previous prime is 51050567. The next prime is 51050581. The reversal of 51050580 is 8505015.

It is a self number, because there is not a number n which added to its sum of digits gives 51050580.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51050581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82432 + ... + 83048.

It is an arithmetic number, because the mean of its divisors is an integer number (1713096).

Almost surely, 251050580 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 51050580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82228608).

51050580 is an abundant number, since it is smaller than the sum of its proper divisors (113406636).

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

51050580 is a wasteful number, since it uses less digits than its factorization.

51050580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 51050580 is about 7144.9688592743. The cubic root of 51050580 is about 370.9655327453.

Adding to 51050580 its reverse (8505015), we get a palindrome (59555595).

The spelling of 51050580 in words is "fifty-one million, fifty thousand, five hundred eighty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 197 210 394 420 591 617 788 985 1182 1234 1379 1851 1970 2364 2468 2758 2955 3085 3702 3940 4137 4319 5516 5910 6170 6895 7404 8274 8638 9255 11820 12340 12957 13790 16548 17276 18510 20685 21595 25914 27580 37020 41370 43190 51828 64785 82740 86380 121549 129570 243098 259140 364647 486196 607745 729294 850843 1215490 1458588 1701686 1823235 2430980 2552529 3403372 3646470 4254215 5105058 7292940 8508430 10210116 12762645 17016860 25525290 51050580