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51682956 = 22313331301
BaseRepresentation
bin1100010100100…
…1111010001100
310121020202200120
43011021322030
5101212323311
65043424540
71165204113
oct305117214
9117222616
1051682956
11271a0196
1215385150
13a927440
146c14c7a
15480d706
hex3149e8c

51682956 has 24 divisors (see below), whose sum is σ = 129870384. Its totient is φ = 15902400.

The previous prime is 51682951. The next prime is 51682963. The reversal of 51682956 is 65928615.

It is a super-2 number, since 2×516829562 = 5342255881795872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51682951) 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, 165495 + ... + 165806.

It is an arithmetic number, because the mean of its divisors is an integer number (5411266).

Almost surely, 251682956 is an apocalyptic number.

It is an amenable number.

51682956 is an abundant number, since it is smaller than the sum of its proper divisors (78187428).

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

51682956 is a wasteful number, since it uses less digits than its factorization.

51682956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331321 (or 331319 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 51682956 is about 7189.0858946044. The cubic root of 51682956 is about 372.4909980858.

The spelling of 51682956 in words is "fifty-one million, six hundred eighty-two thousand, nine hundred fifty-six".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 331301 662602 993903 1325204 1987806 3975612 4306913 8613826 12920739 17227652 25841478 51682956