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51039 = 3253107
BaseRepresentation
bin1100011101011111
32121000100
430131133
53113124
61032143
7301542
oct143537
977010
1051039
113538a
1225653
131a301
1414859
15101c9
hexc75f

51039 has 12 divisors (see below), whose sum is σ = 75816. Its totient is φ = 33072.

The previous prime is 51031. The next prime is 51043. The reversal of 51039 is 93015.

51039 = 12 + 22 + ... + 532.

It is not a de Polignac number, because 51039 - 23 = 51031 is a prime.

51039 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 424 + ... + 530.

It is an arithmetic number, because the mean of its divisors is an integer number (6318).

251039 is an apocalyptic number.

51039 is a deficient number, since it is larger than the sum of its proper divisors (24777).

51039 is a wasteful number, since it uses less digits than its factorization.

51039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 51039 is about 225.9181267628. The cubic root of 51039 is about 37.0937481443.

The spelling of 51039 in words is "fifty-one thousand, thirty-nine".

Divisors: 1 3 9 53 107 159 321 477 963 5671 17013 51039