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57212652100 = 22521997286493
BaseRepresentation
bin110101010010001000…
…111100101001000100
312110200020200212020211
4311102020330221010
51414132414331400
642141053405204
74063532342662
oct652210745104
9173606625224
1057212652100
112229a06135a
12b108499804
13551a13c9c6
142aaa603c32
15174cbb6dba
hexd5223ca44

57212652100 has 36 divisors (see below), whose sum is σ = 124214057604. Its totient is φ = 22873521280.

The previous prime is 57212652061. The next prime is 57212652131. The reversal of 57212652100 is 125621275.

It can be written as a sum of positive squares in 6 ways, for example, as 18595685956 + 38616966144 = 136366^2 + 196512^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56454 + ... + 342946.

It is an arithmetic number, because the mean of its divisors is an integer number (3450390489).

Almost surely, 257212652100 is an apocalyptic number.

57212652100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

57212652100 is an abundant number, since it is smaller than the sum of its proper divisors (67001405504).

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

57212652100 is a wasteful number, since it uses less digits than its factorization.

57212652100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288504 (or 288497 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 57212652100 in words is "fifty-seven billion, two hundred twelve million, six hundred fifty-two thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 1997 3994 7988 9985 19970 39940 49925 99850 199700 286493 572986 1145972 1432465 2864930 5729860 7162325 14324650 28649300 572126521 1144253042 2288506084 2860632605 5721265210 11442530420 14303163025 28606326050 57212652100