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55343080280 = 2357921183003
BaseRepresentation
bin110011100010101101…
…000110001101011000
312021211221202202212002
4303202231012031120
51401320312032110
641231350140132
73666311264165
oct634255061530
9167757682762
1055343080280
112151a7a9384
12a886351648
1352aca00ca7
1429701bb06c
15168d9b9aa5
hexce2b46358

55343080280 has 64 divisors (see below), whose sum is σ = 126697305600. Its totient is φ = 21753164160.

The previous prime is 55343080279. The next prime is 55343080283. The reversal of 55343080280 is 8208034355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55343080283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 625259 + ... + 708261.

It is an arithmetic number, because the mean of its divisors is an integer number (1979645400).

Almost surely, 255343080280 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 55343080280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63348652800).

55343080280 is an abundant number, since it is smaller than the sum of its proper divisors (71354225320).

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

55343080280 is a wasteful number, since it uses less digits than its factorization.

55343080280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83304 (or 83300 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 55343080280 in words is "fifty-five billion, three hundred forty-three million, eighty thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 79 158 211 316 395 422 632 790 844 1055 1580 1688 2110 3160 4220 8440 16669 33338 66676 83003 83345 133352 166006 166690 332012 333380 415015 664024 666760 830030 1660060 3320120 6557237 13114474 17513633 26228948 32786185 35027266 52457896 65572370 70054532 87568165 131144740 140109064 175136330 262289480 350272660 700545320 1383577007 2767154014 5534308028 6917885035 11068616056 13835770070 27671540140 55343080280