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51155 = 513787
BaseRepresentation
bin1100011111010011
32121011122
430133103
53114110
61032455
7302066
oct143723
977148
1051155
1135485
122572b
131a390
14148dd
1510255
hexc7d3

51155 has 8 divisors (see below), whose sum is σ = 66192. Its totient is φ = 37728.

The previous prime is 51151. The next prime is 51157. The reversal of 51155 is 55115.

51155 is nontrivially palindromic in base 4.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51155 - 22 = 51151 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (51151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329 + ... + 458.

It is an arithmetic number, because the mean of its divisors is an integer number (8274).

251155 is an apocalyptic number.

51155 is a deficient number, since it is larger than the sum of its proper divisors (15037).

51155 is a wasteful number, since it uses less digits than its factorization.

51155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805.

The product of its digits is 125, while the sum is 17.

The square root of 51155 is about 226.1747112301. The cubic root of 51155 is about 37.1218287564.

It can be divided in two parts, 5 and 1155, that multiplied together give a palindrome (5775).

The spelling of 51155 in words is "fifty-one thousand, one hundred fifty-five".

Divisors: 1 5 13 65 787 3935 10231 51155