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51659 is a prime number
BaseRepresentation
bin1100100111001011
32121212022
430213023
53123114
61035055
7303416
oct144713
977768
1051659
11358a3
1225a8b
131a68a
1414b7d
151048e
hexc9cb

51659 has 2 divisors, whose sum is σ = 51660. Its totient is φ = 51658.

The previous prime is 51647. The next prime is 51673. The reversal of 51659 is 95615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51659 - 212 = 47563 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25829 + 25830.

It is an arithmetic number, because the mean of its divisors is an integer number (25830).

251659 is an apocalyptic number.

51659 is a deficient number, since it is larger than the sum of its proper divisors (1).

51659 is an equidigital number, since it uses as much as digits as its factorization.

51659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 26.

The square root of 51659 is about 227.2861632392. The cubic root of 51659 is about 37.2433437050.

Subtracting 51659 from its reverse (95615), we obtain a triangular number (43956 = T296).

It can be divided in two parts, 516 and 59, that added together give a palindrome (575).

The spelling of 51659 in words is "fifty-one thousand, six hundred fifty-nine".