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57205050172 = 22437120812251
BaseRepresentation
bin110101010001101011…
…111100101100111100
312110122201101122100221
4311101223330230330
51414123443101142
642140222431124
74063410621634
oct652153745474
9173581348327
1057205050172
1122295839976
12b105a324a4
1355186aa81a
142aa95c56c4
15174c1b4767
hexd51afcb3c

57205050172 has 48 divisors (see below), whose sum is σ = 103975812864. Its totient is φ = 27518400000.

The previous prime is 57205050137. The next prime is 57205050179. The reversal of 57205050172 is 27105050275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57205050179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25412047 + ... + 25414297.

It is an arithmetic number, because the mean of its divisors is an integer number (2166162768).

Almost surely, 257205050172 is an apocalyptic number.

It is an amenable number.

57205050172 is a deficient number, since it is larger than the sum of its proper divisors (46770762692).

57205050172 is a wasteful number, since it uses less digits than its factorization.

57205050172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4450 (or 4448 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 34.

The spelling of 57205050172 in words is "fifty-seven billion, two hundred five million, fifty thousand, one hundred seventy-two".

Divisors: 1 2 4 43 71 86 142 172 284 2081 2251 3053 4162 4502 6106 8324 9004 12212 89483 96793 147751 159821 178966 193586 295502 319642 357932 387172 591004 639284 4684331 6353293 6872303 9368662 12706586 13744606 18737324 25413172 27489212 201426233 332587501 402852466 665175002 805704932 1330350004 14301262543 28602525086 57205050172