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52539888870 = 2335728944621
BaseRepresentation
bin110000111011100111…
…110001010011100110
312000121121001220011000
4300323213301103212
51330100202420440
640045252054130
73536662454400
oct607347612346
9160547056130
1052539888870
1120311441167
12a223604346
134c54027251
142785ba5b70
15157784e730
hexc3b9f14e6

52539888870 has 192 divisors, whose sum is σ = 164815819200. Its totient is φ = 11873917440.

The previous prime is 52539888859. The next prime is 52539888887. The reversal of 52539888870 is 7888893525.

52539888870 is a `hidden beast` number, since 525 + 39 + 8 + 8 + 8 + 8 + 70 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 52539888798 and 52539888807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1155160 + ... + 1199780.

It is an arithmetic number, because the mean of its divisors is an integer number (858415725).

Almost surely, 252539888870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52539888870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82407909600).

52539888870 is an abundant number, since it is smaller than the sum of its proper divisors (112275930330).

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

52539888870 is a wasteful number, since it uses less digits than its factorization.

52539888870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44740 (or 44727 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 63.

The spelling of 52539888870 in words is "fifty-two billion, five hundred thirty-nine million, eight hundred eighty-eight thousand, eight hundred seventy".