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53801252748 = 223229227379599
BaseRepresentation
bin110010000110110011…
…011111011110001100
312010212111112211002200
4302012303133132030
51340141110041443
640414351321500
73613150050165
oct620663373614
9163774484080
1053801252748
11208a944a551
12a515b20290
1350c54553c9
14286550a76c
1515ed45bdd3
hexc86cdf78c

53801252748 has 144 divisors (see below), whose sum is σ = 141916320000. Its totient is φ = 17164877184.

The previous prime is 53801252731. The next prime is 53801252749. The reversal of 53801252748 is 84725210835.

53801252748 is a `hidden beast` number, since 5 + 3 + 80 + 1 + 2 + 527 + 48 = 666.

It is not an unprimeable number, because it can be changed into a prime (53801252749) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89818153 + ... + 89818751.

It is an arithmetic number, because the mean of its divisors is an integer number (985530000).

Almost surely, 253801252748 is an apocalyptic number.

53801252748 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53801252748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70958160000).

53801252748 is an abundant number, since it is smaller than the sum of its proper divisors (88115067252).

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

53801252748 is a wasteful number, since it uses less digits than its factorization.

53801252748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244 (or 1239 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 53801252748 in words is "fifty-three billion, eight hundred one million, two hundred fifty-two thousand, seven hundred forty-eight".

Divisors: 1 2 3 4 6 9 12 18 29 36 58 87 116 174 227 261 348 379 454 522 599 681 758 908 1044 1137 1198 1362 1516 1797 2043 2274 2396 2724 3411 3594 4086 4548 5391 6583 6822 7188 8172 10782 10991 13166 13644 17371 19749 21564 21982 26332 32973 34742 39498 43964 52113 59247 65946 69484 78996 86033 98919 104226 118494 131892 135973 156339 172066 197838 208452 227021 236988 258099 271946 312678 344132 395676 407919 454042 516198 543892 625356 681063 774297 815838 908084 1032396 1223757 1362126 1548594 1631676 2043189 2447514 2494957 2724252 3097188 3943217 4086378 4895028 4989914 6583609 7484871 7886434 8172756 9979828 11829651 13167218 14969742 15772868 19750827 22454613 23659302 26334436 29939484 35488953 39501654 44909226 47318604 51533767 59252481 70977906 79003308 89818452 103067534 118504962 141955812 154601301 206135068 237009924 309202602 463803903 618405204 927607806 1494479243 1855215612 2988958486 4483437729 5977916972 8966875458 13450313187 17933750916 26900626374 53801252748