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51055 = 510211
BaseRepresentation
bin1100011101101111
32121000221
430131233
53113210
61032211
7301564
oct143557
977027
1051055
11353a4
1225667
131a314
141486b
15101da
hexc76f

51055 has 4 divisors (see below), whose sum is σ = 61272. Its totient is φ = 40840.

The previous prime is 51047. The next prime is 51059. The reversal of 51055 is 55015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55015 = 511003.

It is not a de Polignac number, because 51055 - 23 = 51047 is a prime.

It is a super-2 number, since 2×510552 = 5213226050, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51059) 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 3 ways as a sum of consecutive naturals, for example, 5101 + ... + 5110.

It is an arithmetic number, because the mean of its divisors is an integer number (15318).

251055 is an apocalyptic number.

51055 is a deficient number, since it is larger than the sum of its proper divisors (10217).

51055 is a wasteful number, since it uses less digits than its factorization.

51055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10216.

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 51055 is about 225.9535350465. The cubic root of 51055 is about 37.0976238600.

It can be divided in two parts, 510 and 55, that added together give a palindrome (565).

The spelling of 51055 in words is "fifty-one thousand, fifty-five".

Divisors: 1 5 10211 51055