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52197043808 = 25721319307439
BaseRepresentation
bin110000100111001011…
…111010111001100000
311222201200221120010202
4300213023322321200
51323344420400213
635551243444332
73525330360200
oct604713727140
9158650846122
1052197043808
1120155963638
12a1488266a8
134bcaca7950
14275243c400
1515576cab58
hexc272fae60

52197043808 has 288 divisors, whose sum is σ = 136262649600. Its totient is φ = 19454432256.

The previous prime is 52197043807. The next prime is 52197043813. The reversal of 52197043808 is 80834079125.

It is a happy number.

52197043808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×521970438082 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52197043807) 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, 118899653 + ... + 118900091.

It is an arithmetic number, because the mean of its divisors is an integer number (473134200).

Almost surely, 252197043808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52197043808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68131324800).

52197043808 is an abundant number, since it is smaller than the sum of its proper divisors (84065605792).

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

52197043808 is a wasteful number, since it uses less digits than its factorization.

52197043808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 52197043808 in words is "fifty-two billion, one hundred ninety-seven million, forty-three thousand, eight hundred eight".