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54201421220 = 22519281507599
BaseRepresentation
bin110010011110101010…
…000000110110100100
312011220101112111001012
4302132222000312210
51342001030434340
640522204321352
73626106323132
oct623652006644
9164811474035
1054201421220
1120a9431aaa1
12a607b43258
13515a32559b
1428a2716752
151623655565
hexc9ea80da4

54201421220 has 48 divisors (see below), whose sum is σ = 120240288000. Its totient is φ = 20466351360.

The previous prime is 54201421207. The next prime is 54201421223. The reversal of 54201421220 is 2212410245.

It is not an unprimeable number, because it can be changed into a prime (54201421223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147020 + ... + 360579.

It is an arithmetic number, because the mean of its divisors is an integer number (2505006000).

Almost surely, 254201421220 is an apocalyptic number.

It is an amenable number.

54201421220 is an abundant number, since it is smaller than the sum of its proper divisors (66038866780).

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

54201421220 is a wasteful number, since it uses less digits than its factorization.

54201421220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507908 (or 507906 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 54201421220 its reverse (2212410245), we get a palindrome (56413831465).

The spelling of 54201421220 in words is "fifty-four billion, two hundred one million, four hundred twenty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 281 380 562 1124 1405 2810 5339 5620 10678 21356 26695 53390 106780 507599 1015198 2030396 2537995 5075990 9644381 10151980 19288762 38577524 48221905 96443810 142635319 192887620 285270638 570541276 713176595 1426353190 2710071061 2852706380 5420142122 10840284244 13550355305 27100710610 54201421220