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51712976 = 2473712479
BaseRepresentation
bin1100010101000…
…1001111010000
310121022021212102
43011101033100
5101214303401
65044215532
71165360460
oct305211720
9117267772
1051712976
11272107a7
121539a5a8
13a937cc3
146c21ba0
15481756b
hex31513d0

51712976 has 40 divisors (see below), whose sum is σ = 117611520. Its totient is φ = 21561984.

The previous prime is 51712957. The next prime is 51713021. The reversal of 51712976 is 67921715.

It is a super-6 number, since 6×517129766 (a number of 48 digits) contains 666666 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2096 + ... + 10383.

It is an arithmetic number, because the mean of its divisors is an integer number (2940288).

Almost surely, 251712976 is an apocalyptic number.

51712976 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51712976 is an abundant number, since it is smaller than the sum of its proper divisors (65898544).

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

51712976 is a wasteful number, since it uses less digits than its factorization.

51712976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12531 (or 12525 counting only the distinct ones).

The product of its digits is 26460, while the sum is 38.

The square root of 51712976 is about 7191.1734786473. The cubic root of 51712976 is about 372.5631044840.

The spelling of 51712976 in words is "fifty-one million, seven hundred twelve thousand, nine hundred seventy-six".

Divisors: 1 2 4 7 8 14 16 28 37 56 74 112 148 259 296 518 592 1036 2072 4144 12479 24958 49916 87353 99832 174706 199664 349412 461723 698824 923446 1397648 1846892 3232061 3693784 6464122 7387568 12928244 25856488 51712976