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51696282 = 23112312297
BaseRepresentation
bin1100010100110…
…1001010011010
310121021102222010
43011031022122
5101213240112
65044010350
71165261011
oct305151232
9117242863
1051696282
11271aa200
12153909b6
13a930521
146c19a78
15481263c
hex314d29a

51696282 has 48 divisors (see below), whose sum is σ = 117363456. Its totient is φ = 15153600.

The previous prime is 51696259. The next prime is 51696311. The reversal of 51696282 is 28269615.

It is a self number, because there is not a number n which added to its sum of digits gives 51696282.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21358 + ... + 23654.

It is an arithmetic number, because the mean of its divisors is an integer number (2445072).

Almost surely, 251696282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51696282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58681728).

51696282 is an abundant number, since it is smaller than the sum of its proper divisors (65667174).

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

51696282 is a wasteful number, since it uses less digits than its factorization.

51696282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355 (or 2344 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 51696282 is about 7190.0126564562. The cubic root of 51696282 is about 372.5230098544.

The spelling of 51696282 in words is "fifty-one million, six hundred ninety-six thousand, two hundred eighty-two".

Divisors: 1 2 3 6 11 22 31 33 62 66 93 121 186 242 341 363 682 726 1023 2046 2297 3751 4594 6891 7502 11253 13782 22506 25267 50534 71207 75801 142414 151602 213621 277937 427242 555874 783277 833811 1566554 1667622 2349831 4699662 8616047 17232094 25848141 51696282