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51356055 = 3510973121
BaseRepresentation
bin1100001111101…
…0000110010111
310120122011021010
43003322012113
5101121343210
65032423303
71162343052
oct303720627
9116564233
1051356055
1126a97623
1215247b33
13a8416ca
146b6ba99
154796920
hex30fa197

51356055 has 16 divisors (see below), whose sum is σ = 82270944. Its totient is φ = 27356160.

The previous prime is 51356021. The next prime is 51356059. The reversal of 51356055 is 55065315.

It is not a de Polignac number, because 51356055 - 26 = 51355991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51356059) 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, 14895 + ... + 18015.

It is an arithmetic number, because the mean of its divisors is an integer number (5141934).

Almost surely, 251356055 is an apocalyptic number.

51356055 is a deficient number, since it is larger than the sum of its proper divisors (30914889).

51356055 is a wasteful number, since it uses less digits than its factorization.

51356055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4226.

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 51356055 is about 7166.3139060468. The cubic root of 51356055 is about 371.7039860998.

The spelling of 51356055 in words is "fifty-one million, three hundred fifty-six thousand, fifty-five".

Divisors: 1 3 5 15 1097 3121 3291 5485 9363 15605 16455 46815 3423737 10271211 17118685 51356055