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51351305 = 5171913163
BaseRepresentation
bin1100001111100…
…0111100001001
310120121220202012
43003320330021
5101121220210
65032345305
71162323155
oct303707411
9116556665
1051351305
1126a93aa5
1215245235
13a83c4b5
146b6a065
154795305
hex30f8f09

51351305 has 16 divisors (see below), whose sum is σ = 65608704. Its totient is φ = 38449920.

The previous prime is 51351253. The next prime is 51351359. The reversal of 51351305 is 50315315.

51351305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51351305 - 26 = 51351241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14654 + ... + 17816.

It is an arithmetic number, because the mean of its divisors is an integer number (4100544).

Almost surely, 251351305 is an apocalyptic number.

It is an amenable number.

51351305 is a deficient number, since it is larger than the sum of its proper divisors (14257399).

51351305 is a wasteful number, since it uses less digits than its factorization.

51351305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376.

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 51351305 is about 7165.9824867216. The cubic root of 51351305 is about 371.6925259232.

The spelling of 51351305 in words is "fifty-one million, three hundred fifty-one thousand, three hundred five".

Divisors: 1 5 17 85 191 955 3163 3247 15815 16235 53771 268855 604133 3020665 10270261 51351305