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53989259860 = 22512172218129
BaseRepresentation
bin110010010010000000…
…101011101001010100
312011100121022120101001
4302102000223221110
51341032222303420
640445145113044
73620622064654
oct622200535124
9164317276331
1053989259860
1120995591028
12a568a88784
1351253a0a13
14288248a364
15160ebe7b0a
hexc9202ba54

53989259860 has 24 divisors (see below), whose sum is σ = 113470658280. Its totient is φ = 21577949184.

The previous prime is 53989259803. The next prime is 53989259873. The reversal of 53989259860 is 6895298935.

It can be written as a sum of positive squares in 4 ways, for example, as 11619977616 + 42369282244 = 107796^2 + 205838^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53989259792 and 53989259801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1084725 + ... + 1133404.

It is an arithmetic number, because the mean of its divisors is an integer number (4727944095).

Almost surely, 253989259860 is an apocalyptic number.

It is an amenable number.

53989259860 is an abundant number, since it is smaller than the sum of its proper divisors (59481398420).

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

53989259860 is a wasteful number, since it uses less digits than its factorization.

53989259860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219355 (or 2219353 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 64.

The spelling of 53989259860 in words is "fifty-three billion, nine hundred eighty-nine million, two hundred fifty-nine thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 1217 2434 4868 6085 12170 24340 2218129 4436258 8872516 11090645 22181290 44362580 2699462993 5398925986 10797851972 13497314965 26994629930 53989259860