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57312121475 = 527615368817
BaseRepresentation
bin110101011000000100…
…011001001010000011
312110221011212102120202
4311120010121022003
51414333400341400
642155005355415
74066150665110
oct653004311203
9173834772522
1057312121475
1122340220154
12b135868b6b
135534928b1b
142ab98d7907
1517567b44d5
hexd58119283

57312121475 has 24 divisors (see below), whose sum is σ = 82550945568. Its totient is φ = 38655475200.

The previous prime is 57312121457. The next prime is 57312121481. The reversal of 57312121475 is 57412121375.

It is not a de Polignac number, because 57312121475 - 214 = 57312105091 is a prime.

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, 2673734 + ... + 2695083.

It is an arithmetic number, because the mean of its divisors is an integer number (3439622732).

Almost surely, 257312121475 is an apocalyptic number.

57312121475 is a deficient number, since it is larger than the sum of its proper divisors (25238824093).

57312121475 is a wasteful number, since it uses less digits than its factorization.

57312121475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368895 (or 5368890 counting only the distinct ones).

The product of its digits is 58800, while the sum is 38.

The spelling of 57312121475 in words is "fifty-seven billion, three hundred twelve million, one hundred twenty-one thousand, four hundred seventy-five".

Divisors: 1 5 7 25 35 61 175 305 427 1525 2135 10675 5368817 26844085 37581719 134220425 187908595 327497837 939542975 1637489185 2292484859 8187445925 11462424295 57312121475