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51175139 is a prime number
BaseRepresentation
bin1100001100110…
…1111011100011
310120021222002112
43003031323203
5101100101024
65024505535
71160660441
oct303157343
9116258075
1051175139
1126983704
121517b2ab
13a7aa262
146b21b91
15475d00e
hex30cdee3

51175139 has 2 divisors, whose sum is σ = 51175140. Its totient is φ = 51175138.

The previous prime is 51175133. The next prime is 51175153. The reversal of 51175139 is 93157115.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51175139 - 24 = 51175123 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (51175133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25587569 + 25587570.

It is an arithmetic number, because the mean of its divisors is an integer number (25587570).

Almost surely, 251175139 is an apocalyptic number.

51175139 is a deficient number, since it is larger than the sum of its proper divisors (1).

51175139 is an equidigital number, since it uses as much as digits as its factorization.

51175139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4725, while the sum is 32.

The square root of 51175139 is about 7153.6801018776. The cubic root of 51175139 is about 371.2669956358.

The spelling of 51175139 in words is "fifty-one million, one hundred seventy-five thousand, one hundred thirty-nine".