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53007578085 = 3571189515663
BaseRepresentation
bin110001010111011111…
…110111001111100101
312001211012002222010210
4301113133313033211
51332024414444320
640203520210033
73554401656660
oct612737671745
9161735088123
1053007578085
1120531439a80
12a334169919
134cc9ba8627
1427cbd4a6d7
1515a39340e0
hexc577f73e5

53007578085 has 64 divisors (see below), whose sum is σ = 106928087040. Its totient is φ = 21781562880.

The previous prime is 53007578033. The next prime is 53007578101. The reversal of 53007578085 is 58087570035.

It is a happy number.

It is not a de Polignac number, because 53007578085 - 28 = 53007577829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 155037 + ... + 360626.

It is an arithmetic number, because the mean of its divisors is an integer number (1670751360).

Almost surely, 253007578085 is an apocalyptic number.

53007578085 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53007578085 is an abundant number, since it is smaller than the sum of its proper divisors (53920508955).

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

53007578085 is a wasteful number, since it uses less digits than its factorization.

53007578085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515778.

The product of its (nonzero) digits is 1176000, while the sum is 48.

The spelling of 53007578085 in words is "fifty-three billion, seven million, five hundred seventy-eight thousand, eighty-five".

Divisors: 1 3 5 7 11 15 21 33 35 55 77 89 105 165 231 267 385 445 623 979 1155 1335 1869 2937 3115 4895 6853 9345 14685 20559 34265 102795 515663 1546989 2578315 3609641 5672293 7734945 10828923 17016879 18048205 28361465 39706051 45894007 54144615 85084395 119118153 137682021 198530255 229470035 321258049 504834077 595590765 688410105 963774147 1514502231 1606290245 2524170385 3533838539 4818870735 7572511155 10601515617 17669192695 53007578085